Quantum News Briefs June 13: Diraq achieves record accuracy for quantum computing device manufactured by existing semiconductor infrastructure • Queen Mary University chooses cryogenic technology from Oxford Instruments NanoScience to support quantum research • Live Science Reports: DARPA awards $1M for prototype “quantum photonic-dimer laser” using quantum entanglement

News Briefs:

Diraq achieves record accuracy for quantum computing device manufactured by existing semiconductor infrastructure

Diraq, a global leader in quantum computing based on silicon quantum dots, announced on June 12 a record control accuracy of 99.9% for a quantum bit (qubit) manufactured by imec using industry-standard CMOS materials on a 300mm silicon wafer. By confirming 99.9% single qubit control fidelity, Diraq reaches the level of precision required for powerful, full-scale, error-corrected quantum computer processors manufactured by existing silicon chip foundries.
The result, demonstrated on the imec device, is the highest single qubit fidelity demonstrated to date for a silicon spin qubit made in a 300mm foundry environment using standard CMOS materials and processes.
The highly precise measurement of qubit fidelity in the device was made possible by the sophisticated qubit control and measurement techniques for silicon qubits that Diraq has developed over the past decade, including real-time feedback, optimized qubit initialisation, control voltage pulse shaping, and advanced analysis tools including gate set tomography (GST) and randomized benchmarking.

Queen Mary University chooses cryogenic technology from Oxford Instruments NanoScience to support quantum research

The School of Physical and Chemical Sciences at Queen Mary University of London, has installed a dilution refrigerator from Oxford Instruments NanoScience as per a June 13 news release from the University.  To support the expansion of its quantum research activities. Since installing the ProteoxMX, the team can perform more experiments at millikelvin temperatures, enabling the research necessary for the development of quantum computing architectures.

Led by Dr Jan Mol, Director of Research and Professor of Physics at Queen Mary, the Mol Lab is working on engineering quantum systems with atomic precision by creating molecules with the desired quantum properties through chemical design. Their goal is to investigate single-electron transport and potentially manipulate the spin states of individual molecules. This research dives into the essential building blocks for quantum computing and could lead to the development of high-performing, low-power quantum computers.

In Other News:

Live Science Reports: DARPA awards $1M for prototype “quantum photonic-dimer laser” using quantum entanglement

The U.S. Defense Advanced Research Projects Agency (DARPA) has awarded a $1 million grant to scientists building a prototype “quantum photonic-dimer laser” that uses quantum entanglement to “glue” light particles together and generate a highly concentrated laser beam, according to a Live Science article by Owen Hughes on June 12..
The two-color photonic dimer laser works by bonding pairs of photons —  fundamental particles that represent the smallest building blocks of electromagnetic radiation — through a process called quantum entanglement.
By using entangled photons, the quantum photonic-dimer laser can maintain precision and strength over greater distances and in adverse conditions, the scientists said in a statement. Quantum lasers could therefore provide better performance for military applications like surveillance and secure communications in harsh environments.
Lasers play a crucial role in military operations and are used in everything from satellite communications and targeting technology; to mapping and tracking systems like lidar (light detection and ranging).