Diraq Achieves 99.9% Control Accuracy in Quest for Quantum Computing CMOS Chips.

Diraq, a global leader in quantum computing, has achieved a record control accuracy of 99.9% for a quantum bit (qubit) manufactured by imec using industry-standard CMOS materials. This level of precision is required for powerful, full-scale, error-corrected quantum computer processors. Diraq’s technology roadmap aims to achieve a fully error-corrected quantum computing system ahead of competitors. The company is developing qubits that can be integrated with standard CMOS transistors, a key milestone towards integrating high-quality qubits with standard transistors on a single chip. Diraq’s chips will be manufactured by GlobalFoundries, a leading semiconductor manufacturer.

Diraq’s Quantum Computing Breakthrough: High Fidelity Qubits

Diraq, a company specializing in silicon quantum dot-based quantum computing, recently announced a significant achievement in quantum bit (qubit) control accuracy. The company reported a record 99.9% control accuracy for a qubit manufactured using industry-standard Complementary Metal-Oxide-Semiconductor (CMOS) materials on a 300mm silicon wafer. This level of precision is a critical requirement for the development of powerful, full-scale, error-corrected quantum computer processors that can be manufactured using existing silicon chip foundries.

The qubit device used for this demonstration was manufactured by imec, an independent nanoelectronics research and development hub based in Leuven, Belgium. The 99.9% single qubit control fidelity is the highest to date for a silicon spin qubit made in a 300mm foundry environment using standard CMOS materials and processes.

Advanced Techniques for Qubit Control and Measurement

The high precision measurement of qubit fidelity in the device was made possible by the advanced qubit control and measurement techniques that Diraq has developed over the past decade. These techniques include real-time feedback, optimized qubit initialization, control voltage pulse shaping, and advanced analysis tools such as gate set tomography (GST) and randomized benchmarking.

Diraq’s expertise in quantum control and quantum processor design is leading to the development of qubits that can be integrated with the standard CMOS transistors that underpin today’s IT industry. This integration is a key milestone towards the development of high-quality qubits with standard CMOS transistors on a single chip.

Quantum Computing: The Road Ahead

Diraq’s roadmap for the development of quantum processor chips leverages existing semiconductor foundry capabilities, which have benefited from over 60 years of development and trillions of dollars of investment. The company’s goal is to develop quantum processor chips that can handle many millions of qubits, a requirement for commercially viable quantum computing capable of revolutionary applications such as the design of targeted pharmaceuticals and advanced materials.

Silicon CMOS qubits, due to their extremely small size comparable to modern transistors, offer the prospect of integrating many millions of qubits on one chip with a similar number of conventional transistors. This differentiates them from other modalities that require large, energy-intensive, and costly systems.

Diraq’s Quantum Dot Technology and Future Plans

Diraq’s quantum dot technology has been developed over 20 years of research and has generated 11 patent families. The company’s approach relies on the existing silicon manufacturing processes, known as CMOS, used by foundries to produce today’s semiconductor components. This approach provides a faster and cheaper route to market.

The company’s latest work represents another step towards realizing the potential of quantum computing to revolutionize various fields, including drug discovery, optimization, and cryptography. The team plans to present their results at an international semiconductor industry conference in the near future.

Diraq is a company specializing in building quantum processors using silicon ‘quantum dot’ technology. The company has received over US $135 million in funding and aims to revolutionize quantum computing by driving qubit numbers on a single chip to the many millions, and ultimately billions needed for useful commercial applications. By leveraging existing chip fabrication technology and the ability to manufacture qubits at scale within current semiconductor facilities, Diraq is accelerating the transformation of computing as we know it today.