64 results for “quantum”
NEC, which demonstrated the world's first superconducting qubit in 1999, halted development of physical quantum computers at the end of March 2026. In December 2022 it told a Japanese Cabinet Office panel it was aiming beyond 1,000 qubits. The most it ever publicly demonstrated was 8. This piece examines the gap between NEC's own roadmap and what it actually achieved before pulling out.
A quantum router experiment using 10 qubits on China's superconducting quantum processor 'Wukong' recorded a single-unit transmission efficiency of 98%. But fidelity dropped to the 82% range in a two-layer network, and the paper itself acknowledges that the chip's structure caps scalability at five layers.
An MIT research team has published a theoretical design for a superconducting 'arm qubit' that separates information storage from external coupling. Using a quarton coupler, their simulations predict a gate error rate of 8.6×10⁻⁵, surpassing existing experimental results—though building an actual device and verifying material losses remain future work.
A matter-wave experiment reports a quantum phase of free fall that is consistent with the equivalence principle within the tested regime. However, it is not evidence of a unification between quantum mechanics and gravity, and scientific disputes over the physical origin of the phase remain unresolved.
Google, the superconducting-qubit leader, moved into neutral atoms in March 2026. Two months later, the U.S. Commerce Department signed $2.013 billion in preliminary term sheets with nine quantum companies spanning six different modalities. This piece connects the dots—from a space-versus-time map of all six approaches, to a modality-by-modality recount of the CHIPS Act allocations, to Japan's ¥100.4 billion quantum plan.
Q-CTRL tested quantum gravity navigation at sea in the Coral Sea, cutting position error at the 83km mark from 26km (uncorrected inertial navigation) to 4.1km—though peer review and long-term retesting remain outstanding.
QuEra had Claude develop laser recovery logic on a dedicated testbed, achieving 695 successful recoveries out of 700 trials. In production, standalone code without AI runs the recovery, while effects on quantum performance await validation on live hardware.
Anthropic has begun a research preview of MHS, which connects AI to laboratory equipment. This article examines how it differs from existing standards, its 99.3% success rate demonstrated on a quantum computer, and the safety and disclosure challenges that remain.
C.L.A.Y. connects a Qiskit simulator, not actual quantum hardware, to Unity, using it to generate maps and branch the narrative. The game isolates this untested technology within a commercial RPG, and its real limits remain unverified.
Cambridge researchers used an ultracold potassium gas to simulate a relativistic quantum field and directly image the spatial fluctuations present in its ground state. By suppressing thermal noise below 6 nanokelvin, the team isolated fluctuations intrinsic to quantum mechanics itself, though important caveats about the method remain.
