D-Wave Demonstrates High-Fidelity Two-Qubit Entangling Gate for Dual-Rail Qubits
D-Wave demonstrated a two-qubit entangling gate with approximately 99.9% fidelity and about 500 ns operation time. The results were published in Nature.
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OptQC and NTT form capital-and-business partnership, aiming for a 1‑million‑physical‑qubit‑class photonic quantum computer by FY2030
OptQC and NTT have entered a capital-and-business partnership to commercialize photonic quantum computers, expanding collaboration from R&D through commercialization to societal implementation.
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IBM and Others Demonstrate Verifiable Quantum Advantage in Verifiable Quantum Computations
Three studies reported methods to assess the reliability of quantum-computation outputs—using space–time codes, error mitigation, and cross-hardware validation—for problem regimes where classical computation cannot reproduce the answers.
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Alice & Bob Announces On-Premises Quantum System “Helium” Featuring 18 Cat Qubits
Alice & Bob has announced an integrated system for quantum error correction called “Helium.” It is designed to encode a logical qubit using 18 cat qubits and to integrate with HPC environments.
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Microsoft unveils topological quantum processor ‘Majorana 2’ — qubit lifetimes average 20 seconds
Microsoft has announced Majorana 2, which uses a new materials stack. Qubit lifetimes have been extended by more than 1,000× compared with the previous device, and the company aims for a scalable quantum computer by 2029.
