Quantum Computing

Researchers at the University of Science and Technology of China, working with the Jinan Institute of Quantum Technology and Hefei National Laboratory, have converted single photons of ultraviolet…

A research group led by the University of Pennsylvania has written a twisting pattern of polarized light onto a single photon on a silicon chip, then handed that pattern to a pair of entangled…

IonQ said on Oct. 9, 2026, that it had measured more than 1,000 entanglement events per second (1 kHz) between a trapped-ion qubit and a solid-state quantum memory linked by light. The rate is the…

Open the lid of a superconducting quantum computer and most of what you see is not computing; it is wiring. Coaxial lines run down through a refrigerator colder than deep space, one or more for every…

EPB, the city-owned electric and internet utility in Chattanooga, Tennessee, switched on an IonQ Forte Enterprise quantum computer at its EPB Quantum Center on Sept. 18, 2026, installing it in the…

A team led by Sandia National Laboratories has released a single test that measures quantum computers from three companies on the same scale, and reports that today's machines would have to become…

Fujitsu Builds a Quantum Computer Prototype Around Flaws in Diamond Fujitsu said on Sept. 8 that it has built and run a working prototype of a quantum computer that stores information in single tin…

A single-photon source built by Sparrow Quantum and Ruhr-Universität Bochum reaches a flux of more than 500 MHz in an optical fiber, or over 500 million photons a second, the group reported in a…

IBM released Nighthawk r2, a 120-qubit quantum processor, on Aug. 31, 2026, and made it available to users on IBM Quantum Platform. The company says it executes more than 100,000 circuits per second,…

Quantum computing makes two kinds of claim, and they are not the same size. The loud one is that a quantum machine will someday finish a calculation a classical one never could. The quiet one is…

Most record-setting spin qubits start with silicon that has had one of its own isotopes taken out. About one silicon atom in 20 is silicon-29, the element's only stable isotope with a magnetic…

The Institute for Molecular Science in Okazaki, Japan, said on Aug. 24 that a neutral-atom quantum computer called "Shunkai" is in operation, running about 50 qubits. The institute, part of the…