RIKEN Center for Quantum Computing

A 21 August 2026 arXiv preprint compares classical and non-classical photon states for experiments seeking QED vacuum non-linearity, including PVLAS and all-optical four-wave-mixing configurations.

A 21 August 2026 arXiv preprint develops bounds on virtual-distillation success probability, framing the error-mitigation method as a spectral filter and deriving limits from a Slepian concentration operator.

An updated 20 August 2026 arXiv preprint presents fermionic quantum-machine-learning circuit architectures intended to balance trainability, expressivity, classical-simulation hardness, and gradient-evaluation cost.

A new arXiv theory paper studies how measurement feedback and correlated records shape work statistics in a quantum information engine, including a coherence-transition interference contribution.

A new arXiv paper evaluates quantum-jump descriptions of current fluctuations in non-additive open quantum systems and identifies conditions under which imperfect jump detection recovers Landauer-Büttiker results.

A new arXiv paper presents a hybrid workflow that keeps data assimilation and dynamical simulation classical while using a QUBO-to-Ising formulation for quantum-assisted parameter estimation.

Capital, company, research, and policy signals show neutral-atom hardware, quantum infrastructure software, university programs, and government funding remaining the clearest market activity clusters.

UK National Quantum Computing Centre and RIKEN Center for Quantum Computing are algorithmically grouped through similar technology focus signals for QAtlas ecosystem discovery.

RIKEN Center for Quantum Computing and Argonne National Laboratory are algorithmically grouped through same category signals for QAtlas ecosystem discovery.

RIKEN Center for Quantum Computing and Brookhaven National Laboratory are algorithmically grouped through same category signals for QAtlas ecosystem discovery.

CEA-Leti conducts applied quantum technology research in semiconductor devices, silicon qubits, sensors, and cryogenic electronics. Founded: 1967. Estimated employees: 1000+. Known funding: Government funded. Notable products: Quantum semiconductor R&D programs.

CERN QTI explores quantum technologies for high-energy physics and broader scientific applications. Founded: 2020. Estimated employees: Unknown. Known funding: Publicly funded. Notable products: CERN QTI research programs.

SQMS is a DOE national quantum center focused on superconducting quantum materials and systems. Founded: 2020. Estimated employees: 201-500. Known funding: Government funded. Notable products: SQMS Center.