Quantinuum, a leading quantum computing company, has achieved a significant milestone by reaching “three 9’s” 2-qubit gate fidelity in its commercial quantum computer. This means the company has achieved a 99.9% accuracy rate in its quantum operations, a crucial factor for error correction in quantum computing. Additionally, Quantinuum announced that its Quantum Volume, a measure of quantum computing performance, has surpassed one million, significantly higher than its competitors. The company also recently partnered with Microsoft to make a breakthrough in quantum error correction, resulting in the most reliable logical qubits on record.
Quantum Computing Milestones: Quantinuum Achieves High Fidelity and Quantum Volume
Quantinuum, a prominent player in the quantum computing industry, has recently achieved significant milestones in hardware fidelity and Quantum Volume (QV). The company has successfully reached the much-anticipated “three 9’s” 2-qubit gate fidelity in its commercial quantum computer and announced that its Quantum Volume has surpassed one million, a figure exponentially higher than its closest competitors.
The Importance of High Fidelity in Quantum Computing
The success of quantum error correction schemes is heavily dependent on the physical hardware achieving high enough fidelity. If there are too many errors in the physical qubit operations, the error correcting code can amplify rather than diminish overall error rates. For many years, it has been hoped that a quantum computer would achieve “three 9’s” – an inherent 99.9% 2-qubit physical gate fidelity – at which point many of the error-correcting codes required for universal fault-tolerant quantum computing would successfully be able to reduce errors in the system.
Quantinuum has now become the first company to achieve “three 9’s” in a commercially-available quantum computer, demonstrating 99.914(3)% 2-qubit gate fidelity across all qubit pairs on their H1-1 system. This achievement is a significant departure from one-off demonstrations recorded in carefully controlled laboratory conditions, setting a new standard for the entire quantum computing sector.
Quantum Volume: A Measure of Quantum Computing Performance
Quantinuum has also announced another milestone, a seven-figure Quantum Volume (QV) of 1,048,576 – or in terms preferred by the experts, 2^20. This achievement reinforces the company’s commitment to building high-performing quantum computers. Quantum Volume is a measure of the computational power of a quantum computer, taking into account both the number of qubits and the complexity of computations it can handle.
Four years ago, Quantinuum pledged to improve the performance of its H-Series quantum computers by 10x each year for five years, as measured by the industry’s most widely recognized benchmark, QV. The recent achievement of a 2^20 QV on their commercially-available machine shows that the team is living up to this ambitious commitment.
The Quantum Charge-Coupled Device (QCCD) Architecture
On March 5th, 2024, Quantinuum researchers disclosed details of their experiments that provide a solution to a significant problem faced by all quantum computing architectures, known as the wiring problem. The team presented concrete proof of the scalability of the quantum charge-coupled device (QCCD) architecture used in their H-Series quantum computers, supported by a video showing qubits being shuffled through a 2-dimensional grid ion-trap.
The QCCD architecture offers several advantages, including a better signal-to-noise ratio than other modalities, drastically reducing or eliminating the number of swap gates required, and reducing the number of trials required for an accurate result. These features significantly impact the time to solution, making it possible for increasingly complex circuits to achieve accurate results in less time than other 2D connected or lower-fidelity architectures.
The Future of Quantum Computing with Quantinuum
Quantinuum’s new records in fidelity and quantum volume on their commercial H1 device are expected to be achieved on the H2, once upgrades are implemented. This underscores the value that the company offers to users for whom stability, reliability, and robust performance are prerequisites.
The quantum computing landscape is complex and changing, but Quantinuum remains at the forefront in all key metrics. The company’s world-class scientists and engineers are continually driving their technology forward while expanding the possibilities for their users. Their work on applications includes quantum chemistry, quantum Monte Carlo integration, quantum topological data analysis, condensed matter physics, high energy physics, quantum machine learning, and natural language processing.
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