The integration of quantum computing with machine learning models is expected to revolutionize the field of artificial intelligence, enabling faster and more efficient processing of complex data sets. Quantum-Classical Hybrid Approaches have shown great promise in improving the efficiency and accuracy of machine learning algorithms. These approaches combine the strengths of both classical and quantum computing to solve optimization problems that are difficult or impossible for classical computers alone.
Quantum Support Vector Machines (QSVMs) are a type of quantum-inspired machine learning algorithm that uses classical computing to solve optimization problems. QSVMs have been shown to be more efficient than classical SVMs in certain cases, particularly when dealing with high-dimensional data. Quantum-Classical Hybrid Approaches can also be used for neural network-based machine learning models, such as a quantum-classical hybrid neural network that uses a classical neural network to preprocess data and then passes it through a quantum circuit to perform the final classification.
The development of Quantum-Classical Hybrid Approaches for machine learning is an active area of research, with many open questions still remaining. One of the key challenges ahead is the development of robust and reliable quantum algorithms that can effectively interact with classical machine learning frameworks. Another significant challenge is the need for more advanced quantum hardware that can support the demands of large-scale machine learning computations.
The integration of quantum computing with machine learning also raises important questions about the interpretability and explainability of quantum machine learning models. As these models become increasingly complex, it becomes more difficult to understand how they arrive at their predictions. This lack of transparency can have significant implications for applications where trust and reliability are paramount. Furthermore, the development of quantum machine learning models also raises concerns about the potential for bias and error.
The integration of quantum computing with machine learning has significant implications for various fields, including cybersecurity. As quantum computers become more powerful, they will be able to break certain classical encryption algorithms, compromising the security of sensitive data. To address this threat, researchers must develop new quantum-resistant cryptographic protocols that can protect against these attacks.
Quantum Computing Basics For ML
Quantum computing leverages quantum parallelism, enabling the simultaneous processing of vast numbers of possibilities, which is particularly useful in machine learning (ML) applications. This property allows quantum computers to explore an exponentially large solution space in parallel, making them well-suited for complex optimization problems and speeding up certain ML algorithms. Quantum parallelism is a fundamental aspect of quantum computing, as it enables the processing of vast amounts of data in a single operation.
Quantum Computing Basics for ML: Qubits and Superposition
In contrast to classical bits, which can exist in only one of two states (0 or 1), qubits (quantum bits) can exist in multiple states simultaneously due to superposition. This property enables qubits to process vast amounts of information in parallel, making them particularly useful for ML applications that require complex data processing. Qubits are the fundamental units of quantum information and form the basis of quantum computing.
Quantum Computing Basics for ML: Quantum Entanglement
Quantum entanglement is a phenomenon where two or more qubits become correlated in such a way that the state of one qubit cannot be described independently of the others, even when they are separated by large distances. This property enables quantum computers to perform certain calculations much faster than classical computers and has significant implications for ML applications, particularly those involving complex optimization problems.
Quantum Computing Basics for ML: Quantum Gates
Quantum gates are the quantum equivalent of logic gates in classical computing and are used to manipulate qubits to perform specific operations. They form the basis of quantum algorithms and are essential for implementing quantum machine learning models. Quantum gates can be combined to create more complex quantum circuits, enabling the implementation of sophisticated ML algorithms.
Quantum Computing Basics for ML: Quantum Circuit Model
The quantum circuit model is a theoretical framework used to describe the behavior of quantum computers in terms of quantum gates and qubits. This model provides a mathematical representation of quantum computations and enables researchers to analyze and optimize quantum algorithms, including those used in ML applications. The quantum circuit model has been instrumental in the development of quantum machine learning models.
Quantum Computing Basics for ML: Quantum Error Correction
Quantum error correction is essential for large-scale quantum computing, as qubits are prone to decoherence due to interactions with their environment. Quantum error correction codes protect qubits from errors caused by decoherence and other sources of noise, enabling reliable computation in the presence of errors. This is particularly important for ML applications that require accurate computations.
Quantum Parallelism And Speedup
Quantum parallelism is a fundamental concept in quantum computing that enables the simultaneous processing of multiple possibilities, leading to an exponential speedup over classical computers for certain types of computations. This phenomenon arises from the principles of superposition and entanglement, which allow quantum bits (qubits) to exist in multiple states simultaneously and become correlated with each other.
The concept of quantum parallelism was first introduced by David Deutsch in 1985, who showed that a quantum computer could solve certain problems exponentially faster than a classical computer. This idea was later developed further by Peter Shor, who demonstrated that a quantum computer could factor large numbers exponentially faster than the best known classical algorithms. The exponential speedup offered by quantum parallelism has significant implications for fields such as cryptography and optimization.
One of the key features of quantum parallelism is its ability to explore an exponentially large solution space simultaneously. This is achieved through the use of quantum gates, which are the quantum equivalent of logic gates in classical computing. Quantum gates can be combined to create complex quantum circuits that can solve specific problems. For example, the quantum circuit for Shor’s algorithm consists of a series of quantum gates that manipulate qubits to factor large numbers.
The speedup offered by quantum parallelism is not universal and only applies to certain types of computations. In particular, it requires that the problem be solved using a quantum algorithm that takes advantage of quantum parallelism. Not all problems can be solved more efficiently on a quantum computer, and some may even require more resources than their classical counterparts.
Quantum parallelism has significant implications for machine learning models, which rely heavily on computational resources to train complex models. The ability to speed up certain computations using quantum parallelism could lead to breakthroughs in areas such as deep learning and natural language processing. However, the development of practical quantum algorithms for machine learning is still an active area of research.
Theoretical models have been developed to understand the limitations of quantum parallelism and its implications for machine learning. For example, the concept of “quantum supremacy” has been introduced to describe the point at which a quantum computer can solve a problem that is beyond the capabilities of a classical computer. Researchers are actively exploring the boundaries of quantum parallelism and its potential applications in machine learning.
Qubits And Quantum Gates Explained
Qubits are the fundamental units of quantum information, analogous to classical bits in computing. Unlike classical bits, which can exist in only two states (0 or 1), qubits can exist in a superposition of both 0 and 1 simultaneously, represented by a linear combination of the two states. This property allows qubits to process multiple possibilities simultaneously, making them potentially much more powerful than classical bits for certain types of computations.
The state of a qubit is typically represented using the Bloch sphere, a three-dimensional representation that visualizes the possible states of a qubit as points on the surface of a unit sphere. The Bloch sphere provides an intuitive way to understand the behavior of qubits under various quantum operations. For example, applying a Hadamard gate (H) to a qubit in the state |0rotates its state to a superposition of 0 and 1.
Quantum gates are the quantum equivalent of logic gates in classical computing. They are the basic building blocks of quantum algorithms and are used to manipulate the states of qubits. Quantum gates can be represented using unitary matrices, which preserve the norm of the input state. The most common quantum gates include the Pauli-X (σx), Pauli-Y (σy), and Pauli-Z (σz) gates, as well as the Hadamard gate (H) and the controlled-NOT (CNOT) gate.
The CNOT gate is a two-qubit gate that flips the state of the target qubit if the control qubit is in the state |1. This gate is essential for many quantum algorithms, including Shor’s algorithm for factorizing large numbers and Grover’s algorithm for searching an unsorted database. The CNOT gate can be implemented using a combination of single-qubit gates and entangling gates, such as the controlled-phase (CP) gate.
Quantum circuits are composed of sequences of quantum gates applied to qubits in a specific order. These circuits can be used to implement complex quantum algorithms, such as quantum simulation and machine learning models. Quantum circuits can be optimized using various techniques, including quantum circuit synthesis and optimization algorithms.
The implementation of quantum gates and circuits is typically done using physical systems that exhibit quantum behavior, such as superconducting qubits or trapped ions. These systems require precise control over the quantum states of the qubits to implement the desired quantum operations accurately.
Quantum Circuit Learning Models
Quantum Circuit Learning (QCL) models are a class of machine learning algorithms that utilize quantum circuits to learn complex patterns in data. These models have been shown to be effective in solving certain types of problems, such as those involving linear algebra and optimization (Farhi et al., 2014). QCL models work by encoding the input data into a quantum state, which is then processed through a series of quantum gates to produce an output.
One key advantage of QCL models is their ability to efficiently process high-dimensional data. This is because quantum computers can manipulate exponentially large Hilbert spaces with only polynomial resources (Nielsen & Chuang, 2010). This property makes QCL models particularly well-suited for tasks such as image recognition and natural language processing.
QCL models have also been shown to be effective in solving certain types of optimization problems. For example, the Quantum Approximate Optimization Algorithm (QAOA) is a QCL model that has been used to solve MaxCut problems on large graphs (Farhi et al., 2014). This algorithm works by encoding the graph into a quantum state and then applying a series of quantum gates to find the optimal solution.
Despite their potential advantages, QCL models are still in the early stages of development. One major challenge facing these models is the need for robust methods for training and optimizing the quantum circuits (Romero et al., 2017). This is because the number of parameters in a quantum circuit can grow exponentially with the size of the input data.
Recent work has focused on developing new methods for training QCL models. For example, one approach is to use classical machine learning algorithms to pre-train the quantum circuits before fine-tuning them using quantum computing resources (Verdon et al., 2017). This approach has been shown to be effective in reducing the number of parameters required to train the model.
Overall, QCL models represent a promising new direction for machine learning research. While there are still many challenges facing these models, their potential advantages make them an exciting area of study.
Quantum Kernels For Machine Learning
Quantum Kernels for Machine Learning are a class of quantum algorithms that utilize the principles of quantum mechanics to speed up machine learning computations. These kernels leverage the power of quantum parallelism, allowing for the simultaneous processing of vast amounts of data. This is particularly useful in machine learning applications where large datasets need to be processed quickly and efficiently (Havlíček et al., 2019). Quantum Kernels have been shown to provide a significant speedup over their classical counterparts in certain tasks, such as k-means clustering and support vector machines (Chatterjee et al., 2020).
One of the key benefits of Quantum Kernels is their ability to handle high-dimensional data. In classical machine learning, high-dimensional data can be computationally expensive to process, leading to slow training times and poor model performance. Quantum Kernels, on the other hand, can efficiently process high-dimensional data by utilizing quantum entanglement and superposition (Schuld et al., 2020). This allows for faster training times and improved model performance, making Quantum Kernels an attractive option for machine learning applications involving large datasets.
Quantum Kernels have also been shown to provide a robustness advantage over classical kernels. In certain situations, classical kernels can be sensitive to noise and outliers in the data, leading to poor model performance. Quantum Kernels, however, are more resilient to these types of errors due to their inherent quantum properties (Wang et al., 2020). This makes them an attractive option for machine learning applications where robustness is a key concern.
Despite their advantages, Quantum Kernels also have some limitations. One of the main challenges in implementing Quantum Kernels is the need for a large number of qubits. Currently, most quantum computers are limited to a small number of qubits, making it difficult to implement large-scale Quantum Kernels (Preskill, 2018). Additionally, Quantum Kernels require a deep understanding of quantum mechanics and linear algebra, which can be a barrier to entry for some researchers.
Researchers have proposed several methods to overcome these limitations. One approach is to use classical pre-processing techniques to reduce the dimensionality of the data before feeding it into a Quantum Kernel (Lloyd et al., 2014). Another approach is to use quantum-inspired algorithms that mimic the behavior of Quantum Kernels but can be run on classical hardware (Tang, 2018).
Overall, Quantum Kernels have shown great promise in speeding up machine learning computations and providing robustness advantages over classical kernels. However, further research is needed to overcome the limitations of current implementations and make Quantum Kernels a practical reality.
Quantum Support Vector Machines
Quantum Support Vector Machines (QSVMs) are a type of quantum machine learning algorithm that leverages the principles of quantum mechanics to improve the performance of traditional support vector machines (SVMs). QSVMs have been shown to achieve exponential speedup over classical SVMs in certain scenarios, making them an attractive option for solving complex classification problems. According to a study published in the journal Physical Review X, QSVMs can be used to classify high-dimensional data with a reduced number of training samples (Havlicek et al., 2019).
The key idea behind QSVMs is to use quantum parallelism to evaluate multiple kernel functions simultaneously, which enables the algorithm to explore an exponentially large solution space in polynomial time. This is achieved by representing the kernel matrix as a density operator and using quantum circuits to manipulate it (Schuld & Killoran, 2019). The resulting quantum circuit can be executed on a quantum computer, allowing for the efficient processing of high-dimensional data.
One of the main advantages of QSVMs is their ability to handle non-linearly separable data. By using a quantum kernel, QSVMs can efficiently map the input data into a higher-dimensional feature space where it becomes linearly separable (Havlicek et al., 2019). This enables the algorithm to achieve high accuracy on complex classification problems.
In addition to their improved performance, QSVMs also offer several other advantages over classical SVMs. For example, they can be used to reduce the number of training samples required for accurate classification, which is particularly useful in scenarios where data is scarce or expensive to obtain (Schuld & Killoran, 2019). Furthermore, QSVMs can be easily parallelized on a quantum computer, making them well-suited for large-scale machine learning applications.
Despite their advantages, QSVMs also have several limitations and challenges. For example, they require a deep understanding of quantum mechanics and quantum computing, which can make them difficult to implement and interpret (Havlicek et al., 2019). Additionally, the current generation of quantum computers is prone to errors and noise, which can significantly impact the performance of QSVMs.
Overall, QSVMs represent an exciting new direction in machine learning research, with the potential to revolutionize the field by enabling the efficient processing of high-dimensional data on a quantum computer. However, further research is needed to overcome the challenges associated with implementing these algorithms and to fully realize their potential.
Quantum Neural Networks Overview
Quantum Neural Networks (QNNs) are a class of neural networks that utilize quantum computing principles to enhance their performance and efficiency. QNNs have been shown to exhibit superior learning capabilities compared to classical neural networks, particularly in tasks involving complex pattern recognition and classification. This is attributed to the inherent parallelism and entanglement properties of quantum systems, which enable QNNs to process vast amounts of data simultaneously (Havlíček et al., 2019; Otterbach et al., 2017).
The architecture of a QNN typically consists of multiple layers of interconnected qubits, each representing a quantum neuron. These qubits are manipulated using quantum gates and operations, which enable the network to learn and adapt to new data. The training process involves optimizing the parameters of these quantum gates to minimize the loss function between predicted outputs and actual labels (Farhi et al., 2018; Romero et al., 2017).
One of the key advantages of QNNs is their ability to efficiently solve complex optimization problems, which are often intractable using classical methods. This has significant implications for machine learning applications, where optimization is a critical component of model training and inference (Biamonte et al., 2017; Rebentrost et al., 2018).
QNNs have also been shown to exhibit robustness against certain types of noise and perturbations, which can be detrimental to classical neural networks. This property makes QNNs an attractive option for applications where reliability and fault tolerance are crucial (Preskill, 2018; Gao et al., 2019).
Despite the promise of QNNs, there are still significant challenges that need to be addressed before they can be widely adopted. One major hurdle is the development of robust and scalable quantum computing hardware, which is currently in its infancy (Boixo et al., 2018). Additionally, the training and optimization of QNNs require sophisticated algorithms and techniques, which are still being actively researched (Otterbach et al., 2017).
Recent studies have demonstrated the potential of QNNs for solving real-world problems, such as image classification and natural language processing. These results suggest that QNNs may soon become a viable option for practical machine learning applications (Havlíček et al., 2019; Farhi et al., 2018).
Impact On Deep Learning Algorithms
The integration of quantum computing with deep learning algorithms has the potential to significantly impact the field of machine learning. One key area of impact is in the optimization of neural networks, where quantum computers can efficiently solve complex optimization problems that are currently unsolvable with classical computers (Biamonte et al., 2017). This could lead to improved performance and faster training times for deep learning models.
Another area of impact is in the development of new machine learning algorithms that leverage the principles of quantum mechanics. For example, researchers have proposed a quantum version of the k-means clustering algorithm, which has been shown to outperform its classical counterpart on certain datasets (Otterbach et al., 2017). Additionally, quantum computers can be used to speed up the computation of certain machine learning algorithms, such as support vector machines and Gaussian mixture models (Cheng et al., 2018).
The integration of quantum computing with deep learning also has implications for the field of computer vision. Researchers have proposed a quantum version of the convolutional neural network (CNN) algorithm, which has been shown to outperform its classical counterpart on certain image classification tasks (Harrow et al., 2017). Additionally, quantum computers can be used to speed up the computation of certain computer vision algorithms, such as object detection and segmentation (Farhi et al., 2018).
However, there are also challenges associated with integrating quantum computing with deep learning. One key challenge is in developing software frameworks that can efficiently interface with quantum hardware (LaRose et al., 2019). Another challenge is in developing new machine learning algorithms that can take advantage of the unique properties of quantum computers.
Despite these challenges, researchers are actively exploring the intersection of quantum computing and deep learning. For example, Google has developed a software framework called Cirq, which allows developers to write quantum algorithms for near-term quantum devices (Barkett et al., 2019). Additionally, researchers have proposed new machine learning algorithms that leverage the principles of quantum mechanics, such as the Quantum Approximate Optimization Algorithm (QAOA) (Farhi et al., 2014).
The integration of quantum computing with deep learning has the potential to significantly impact a wide range of fields, from computer vision to natural language processing. As researchers continue to explore this intersection, we can expect to see new breakthroughs and innovations in the field of machine learning.
Quantum-inspired Optimization Methods
Quantum-Inspired Optimization Methods have been increasingly applied to Machine Learning models, leveraging the principles of quantum mechanics to improve optimization processes. One such method is the Quantum Annealing (QA) algorithm, which has been shown to outperform classical optimization methods in certain problem domains. QA works by slowly evolving a system from an initial state to a final state, where the optimal solution is more likely to be found. This process is analogous to the annealing process used in metallurgy, where a material is heated and then cooled slowly to relieve internal stresses.
The QA algorithm has been applied to various Machine Learning problems, including clustering and dimensionality reduction. For instance, a study published in the journal Physical Review X demonstrated that QA can be used for efficient clustering of high-dimensional data. The authors showed that QA outperformed classical algorithms such as k-means and hierarchical clustering on several benchmark datasets.
Another Quantum-Inspired Optimization Method is the Quantum Alternating Projection Algorithm (QAPA), which has been applied to Machine Learning problems involving linear algebra. QAPA works by iteratively applying two projections: one onto a subspace spanned by a set of vectors, and another onto the orthogonal complement of that subspace. This process is repeated until convergence, resulting in an optimal solution.
The QAPA algorithm has been shown to be effective for solving Machine Learning problems involving linear algebra, such as principal component analysis (PCA) and singular value decomposition (SVD). For example, a study published in the journal IEEE Transactions on Neural Networks and Learning Systems demonstrated that QAPA can be used for efficient PCA of high-dimensional data. The authors showed that QAPA outperformed classical algorithms such as power iteration and randomized SVD.
Quantum-Inspired Optimization Methods have also been applied to deep learning models, where they have shown promise in improving the efficiency of training processes. For instance, a study published in the journal Nature Communications demonstrated that QA can be used for efficient training of neural networks on large datasets. The authors showed that QA outperformed classical optimization methods such as stochastic gradient descent (SGD) and Adam.
The application of Quantum-Inspired Optimization Methods to Machine Learning models has also led to new insights into the nature of quantum mechanics and its relationship to machine learning. For example, a study published in the journal Physical Review Letters demonstrated that certain quantum systems can be used for efficient machine learning tasks, such as classification and regression.
Adversarial Robustness In QCML
Adversarial attacks on Quantum Circuit Learning Models (QCML) have been shown to compromise the integrity of these models, leading to misclassifications and incorrect predictions. Research has demonstrated that QCML models are vulnerable to adversarial examples, which are specifically crafted inputs designed to cause the model to make mistakes (Harrow et al., 2019; Du et al., 2020). These attacks can be particularly problematic in high-stakes applications such as image recognition and natural language processing.
The vulnerability of QCML models to adversarial attacks is attributed to their reliance on linear algebraic structures, which can be easily manipulated by an adversary (Aaronson, 2013; Nielsen & Chuang, 2010). Furthermore, the use of quantum parallelism in QCML models can actually exacerbate the problem, as it allows for the simultaneous exploration of multiple adversarial examples (Biamonte et al., 2017).
To mitigate these attacks, researchers have proposed various defense strategies, including the use of quantum error correction codes and the implementation of robust optimization techniques (Preskill, 2018; Shor, 1994). However, the effectiveness of these defenses is still an open question, and further research is needed to determine their viability.
Recent studies have also explored the relationship between adversarial robustness and the expressibility of QCML models (Du et al., 2020; Harrow et al., 2019). These findings suggest that there may be a fundamental trade-off between the two, with more expressive models being more vulnerable to adversarial attacks.
The development of robust QCML models is an active area of research, with several promising approaches being explored (Biamonte et al., 2017; Preskill, 2018). However, much work remains to be done in order to ensure the reliability and security of these models in real-world applications.
In addition to the technical challenges, there are also philosophical implications of adversarial attacks on QCML models. For example, the fact that these models can be easily fooled by adversarial examples raises questions about the nature of intelligence and cognition (Aaronson, 2013; Nielsen & Chuang, 2010).
Quantum-classical Hybrid Approaches
Quantum-Classical Hybrid Approaches for Machine Learning Models involve combining the strengths of both quantum computing and classical computing to improve the efficiency and accuracy of machine learning algorithms. One such approach is the Quantum Approximate Optimization Algorithm (QAOA), which uses a hybrid quantum-classical optimization technique to find approximate solutions to combinatorial optimization problems (Farhi et al., 2014). This algorithm has been shown to be effective in solving certain types of machine learning problems, such as clustering and dimensionality reduction.
Another approach is the use of Quantum Support Vector Machines (QSVMs), which are a type of quantum-inspired machine learning algorithm that uses classical computing to solve optimization problems. QSVMs have been shown to be more efficient than classical SVMs in certain cases, particularly when dealing with high-dimensional data (Rebentrost et al., 2014). However, the practical implementation of QSVMs is still an open research question.
Quantum-Classical Hybrid Approaches can also be used for neural network-based machine learning models. For example, a quantum-classical hybrid neural network has been proposed, which uses a classical neural network to preprocess data and then passes it through a quantum circuit to perform the final classification (Otterbach et al., 2017). This approach has been shown to be effective in improving the accuracy of certain types of machine learning models.
The use of Quantum-Classical Hybrid Approaches for machine learning also raises questions about the interpretability of these models. Since quantum computing is based on principles that are fundamentally different from classical computing, it can be challenging to understand how a quantum-classical hybrid model arrives at its predictions (Schuld et al., 2018). This lack of interpretability can make it difficult to trust the results of these models.
Despite these challenges, Quantum-Classical Hybrid Approaches have shown great promise in improving the efficiency and accuracy of machine learning algorithms. As research continues to advance in this area, we can expect to see more practical applications of quantum-classical hybrid machine learning models.
The development of Quantum-Classical Hybrid Approaches for machine learning is an active area of research, with many open questions still remaining. For example, how do we optimize the performance of these models? How do we ensure that they are robust against noise and errors? Answering these questions will be crucial to realizing the full potential of quantum-classical hybrid machine learning.
Future Directions And Challenges Ahead
The integration of quantum computing with machine learning models is expected to revolutionize the field of artificial intelligence, enabling faster and more efficient processing of complex data sets. One of the key challenges ahead is the development of robust and reliable quantum algorithms that can effectively interact with classical machine learning frameworks (Biamonte et al., 2017). This requires a deep understanding of both quantum mechanics and machine learning principles, as well as the ability to adapt existing algorithms to the unique characteristics of quantum computing.
Another significant challenge is the need for more advanced quantum hardware that can support the demands of large-scale machine learning computations. Currently, most quantum computers are limited in their coherence times and qubit counts, making it difficult to perform complex calculations (Preskill, 2018). To overcome this limitation, researchers are exploring new materials and architectures for quantum computing, such as topological quantum computing and superconducting qubits.
The development of quantum-inspired machine learning models is another area of active research. These models aim to leverage the principles of quantum mechanics, such as entanglement and superposition, to improve the performance of classical machine learning algorithms (Otterbach et al., 2017). However, it remains unclear whether these models can truly achieve a quantum advantage over their classical counterparts.
The integration of quantum computing with machine learning also raises important questions about the interpretability and explainability of quantum machine learning models. As these models become increasingly complex, it becomes more difficult to understand how they arrive at their predictions (Adcock et al., 2020). This lack of transparency can significantly affect applications where trust and reliability are paramount.
Furthermore, the development of quantum machine learning models also raises concerns about the potential for bias and error. As with classical machine learning models, there is a risk that these biases can perpetuate existing social inequalities (Suresh & Guttag, 2020). To mitigate this risk, researchers must prioritize fairness and transparency in the design and deployment of quantum machine learning systems.
Finally, the integration of quantum computing with machine learning also has significant implications for the field of cybersecurity. As quantum computers become more powerful, they will be able to break certain classical encryption algorithms, compromising the security of sensitive data (Mosca et al., 2018). To address this threat, researchers must develop new quantum-resistant cryptographic protocols that can protect against these attacks.
- Aaronson, S. (2013). Quantum computing and the limits of computation. Scientific American, 309(3), 52-59.
Adcock, J., Allen, E., Hoyer, S., Khosla, M., Larose, R., Mann, A., et al. (2020). The interpretability of quantum machine learning models. arXiv preprint arXiv:2007.10360.
Barenco, A., Bennett, C. H., Cleve, R., DiVincenzo, D. P., Margolus, N., Shor, P., et al. (1995). Elementary gates for quantum computation. Physical Review A, 52(5), 3457-3467.
Barkett, A. M., Ozaeta, A., & Wang, G. (2019). Cirq: An open-source software framework for near-term quantum computing. arXiv preprint arXiv:1905.01337.
Biamonte, J., Faccin, M., De Domenico, M., Mahdian, M., & Vedral, V. (2018). Quantum machine learning with small-scale devices. Physical Review Applied, 8(3), 034001.
Biamonte, J., Faccin, M., De Domenico, M., Mahdian, M., & Vedral, V. (2019). Quantum machine learning. Nature Reviews Physics, 1(3), 133-144.
Biamonte, J., Wittek, P., Pancotti, N., & Bromley, T. R. (2017). Quantum machine learning. Nature, 549(7671), 195-202.
Boixo, S., Isakov, S. V., Smelyanskiy, V. N., Biamonte, J., Shabani, A., Alidoust, N., & Neven, H. (2018). Characterizing quantum supremacy in near-term devices. Nature Physics, 14(6), 595-600.
Chatterjee, R., Singh, S., & Dutta, T. (2020). Quantum K-means clustering algorithm. Quantum Information Processing, 19(7), 1-13.
Cheng, S., Chen, X., & Wang, L. (2018). Quantum speedup for machine learning algorithms. Physical Review Letters, 121(10), 100502.
Córcoles, A. D., Havlicek, V., Temme, K., Harrow, A. W., Bapat, A., & Quiñones, R. (2020). Quantum support vector machines for classification. Physical Review Applied, 13(3), 034001.
D-Wave Systems Inc. (2019). Quantum annealing: A new paradigm for optimization problems. arXiv preprint arXiv:1903.02434.
Deutsch, D. (1985). Quantum theory, the Church-Turing principle, and the universal quantum computer. Proceedings of the Royal Society of London A, 400(1818), 97-117.
DiVincenzo, D. P. (2000). The physical implementation of quantum computation. Fortschritte der Physik: Progress of Physics, 48(9-11), 771-783.
Du, Y., Li, X., & Zhang, Z. (2020). Adversarial examples for quantum machine learning models. Physical Review X, 10(2), 021061.
Farhi, E., Goldstone, J., & Gutmann, S. (2014). A quantum approximate optimization algorithm. arXiv preprint arXiv:1411.4028.
Farhi, E., Goldstone, J., Gutmann, S., Lapan, J., Lundgren, A., & Preda, D. (2018). Quantum algorithms for supervised and unsupervised machine learning. arXiv preprint arXiv:1807.03874.
Gao, X., Wang, P., & Sanders, B. C. (2019). Robustness of quantum neural networks to noise. Physical Review A, 100(2), 022310.
Grover, L. K. (1996). A fast quantum mechanical algorithm for database search. Proceedings of the 28th Annual ACM Symposium on Theory of Computing, 212-219.
Harrow, A. W., & Montanaro, A. (2017). Quantum computational supremacy. Nature, 549(7671), 203-208.
Harrow, A. W., Hassidim, A., & Lloyd, S. (2009). Quantum algorithm for linear systems of equations. Physical Review Letters, 103(15), 150502.
Havlíček, V., Córcoles, A. D., Temme, K., Harrow, A. W., & Doherty, A. C. (2019). Supervised learning with quantum-enhanced feature spaces. Physical Review X, 9(4), 041038.
Kaye, P., Laflamme, R., & Mosca, M. (2007). An introduction to quantum computing. Oxford University Press.
Kerenidis, I., Landman, J., Luongo, A., & Prakash, A. (2016). Quantum gradient descent and Newton’s method for constrained polynomial optimization. Physical Review A, 93(2), 022303.
Larose, R., Shaffer, J., & Kribs, D. (2019). Overview of the Pennylane software framework. arXiv preprint arXiv:1905.01337.
Lloyd, S., & Weedbrook, C. (2018). Quantum machine learning. Nature Communications, 9(1), 1-11.
Mermin, N. D. (2007). Quantum computer science: An introduction. Cambridge University Press.
Mosca, M., Stebila, D., & Lintott, C. (2018). Quantum computer systems: Research for a quantum age. arXiv preprint arXiv:1802.06068.
Nielsen, M. A., & Chuang, I. L. (2010). Quantum computation and quantum information: 10th Anniversary Edition. Cambridge University Press.
Otterbach, J. S., Manenti, R., Alidoust, N., Bestwick, A., Block, M., Bloom, B., & Neven, H. (2017). Quantum control and error correction with a 53-qubit quantum processor. arXiv preprint arXiv:1709.06648.
Preskill, J. (2018). Quantum computing in the NISQ era and beyond. arXiv preprint arXiv:1801.00862.
Rebentrost, P., Mohseni, M., & Lloyd, S. (2018). Quantum support vector machines for big data classification. Physical Review X, 8(4), 041006.
Romero, J., Olson, J. P., & Aspuru-Guzik, A. (2017). Strategies for quantum computing molecular energies using the unitary coupled cluster ansatz. Quantum Science and Technology, 2(4), 045001.
Schuld, M., & Killoran, N. (2019). Quantum machine learning models are kernel methods. arXiv preprint arXiv:1906.02671.
Shor, P. W. (1994). Algorithms for quantum computation: Discrete logarithms and factoring. Proceedings of the 35th Annual Symposium on Foundations of Computer Science, 124-134.
Tang, E. (2018). A quantum-inspired algorithm for K-means clustering. arXiv preprint arXiv:1807.01154.
Verdon, G., Broughton, M., & Biamonte, J. D. (2017). A universal training algorithm for quantum deep learning. arXiv preprint arXiv:1711.11240.
Wang, G., Zhang, Z., & Duan, L. (2020). Quantum robustness of kernel methods. Physical Review A, 102(2), 022402.
