Rigetti Computing, Inc. , a pioneer in full-stack quantum-classical computing, announced today the public launch of its 84-qubit Ankaa-3 system. Ankaa-3 is Rigetti’s newest flagship quantum computer featuring an extensive hardware redesign that enables superior performance. Rigetti also celebrates major two-qubit gate fidelity milestones with Ankaa-3: successfully halving error rates in 2024 to achieve a median 99.0% iSWAP gate fidelity, as well as demonstrating 99.5% median fidelity fSim gates.

Researchers from Jena, Würzburg and Potsdam have successfully developed a design for the smallest system of its kind so far to take highly secure quantum communication to space: Led by Fraunhofer IOF, the project CubEniK developed an ultracompact payload for a satellite the size of a shoe box, a so called “CubeSat”. The goal of the mini satellite is to transmit a secure quantum key over a distance of 300 kilometers between two ground stations in Jena and Munich.

The University of Oxford research group led by OQC CSO Dr. Peter Leek today announced research demonstrating a fundamental speedup of the controlled-Z gate in superconducting qubits reaching a fidelity of 99.8% in only 25 ns.

QuantWare and QuantrolOx have announced a joint offering enabling quantum computer researchers to develop error correction capabilities using QuantWare’s flagship error-correction Contralto-A quantum processor with the automated tuneup of QuantrolOx’s Quantum EDGE software.

QuantWare, a global leader in quantum hardware scaling technologies, today revealed Contralto-A: a new Quantum Processor Unit (QPU) with complementary offering designed to meet the requirements of its customers wanting to scale their quantum error-correction capabilities.

Researchers from the RIKEN Center for Quantum Computing and Toshiba have succeeded in building a quantum computer gate based on a double-transmon coupler (DTC), which had been proposed theoretically by Hayato Goto, Senior Fellow at Toshiba, as a device that could significantly enhance the fidelity of quantum gates. Using this, they achieved a fidelity of 99.90 percent for a two-qubit device known as a CZ gate and 99.98 percent for a single-qubit gate. This breakthrough, which was carried out as part of the Q-LEAP project, not only boosts the performance of existing noisy intermediate-scale quantum (NISQ) devices but also helps pave the way for the realization of fault-tolerant quantum computation through effective quantum error correction.

Dutch quantum technology company Orange Quantum Systems [OrangeQS] has today launched the OrangeQS Max, which is designed to accelerate the development of quantum computers by making it possible to test new, more powerful quantum chips with a fraction of the R&D resources that are normally required for such testing.

The best compact emitters of light are quantum dots—semiconductor nanocrystals with quantum mechanical behaviours thanks to their small size (2–10 nanometres). The emitted light goes in all directions and has poor polarisation, but placing it next to nanostructures enables directional emission or circular polarisation. Simultaneous control of both direction and polarisation, however, has never been achieved. In their paper “Unidirectional chiral emission via twisted bi-layer metasurfaces”, Associate Prof Wu and her team set out to bridge this gap.

Rigetti UK Limited, a wholly owned subsidiary of Rigetti Computing, Inc. (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that the UK’s National Quantum Computing Centre (NQCC) officially opened the doors of its landmark facility on Harwell Campus on October 25. The facility will support world-class quantum computing research and provide state-of-the-art laboratories for designing, building, and testing quantum computers. Rigetti’s system located at the NQCC is a fully operational 24-qubit Ankaa-class quantum computer, featuring tunable couplers and a square lattice for fast gate times, enhanced connectivity, and high fidelity. As part of the implementation, Rigetti will be integrating Riverlane’s technology with the long-term objective of large-scale error correction.

Scientists from the University of Warsaw (UW) is Faculty of Physics in collaboration with other researchers from Poland as well as Italy, Iceland, and Australia, have demonstrated the creation of perovskite crystals with predefined shapes that can serve in nonlinear photonics as waveguides, couplers, splitters, and modulators. The research results were published in “Nature Materials”.