The reporting

6 articles

Topic: quantum computing

A gold and copper dilution-refrigerator assembly with many metal cables and a white arrow indicating an optical fiber used for superconducting-qubit control.

ANALYSIS Quantum

Codex Found Six MIT Qubit Resonators and Completed Most Fixed-Qubit Targets Without Intervention

A first-party MIT and OpenAI case study reports researcher intervention to improve four of 40 target measurements on four fixed-frequency qubits. Noisy tunable-qubit scans still required expert judgment.

Three rows of measurements compare photon lifetime, multiphoton probability and two-photon interference at 80 MHz, 500 MHz and 1 GHz excitation rates.

ANALYSIS Quantum

A Half-Gigahertz Photon Source Is Bright. Its Quantum Quality Is the Harder Test

A Sparrow Quantum and Ruhr University Bochum preprint reports 515 million in-fiber single photons per second. The same measurements show why source rate alone does not make a scalable photonic quantum computer.

Three stacked bar charts compare local quantum-state-texture measurements for non-entangling operations and two CNOT gate orientations.

ANALYSIS Quantum

Four Nuclear Spins Show a Local Shortcut for Finding Entangling Gates

Local measurements identified controlled entangling operations in a four-spin NMR test, but scaling beyond the experiment remains unproved.

Technical illustration of two transmon qubits connected through a proposed double-resonator coupler, with circuit, layout, energy-spectrum and interaction diagrams.

ANALYSIS Quantum

A Two-Path Coupler Could Quiet Superconducting Qubits Between Gates

A proposed single-junction circuit uses interference between two resonator modes to suppress idle crosstalk and activate fast entangling gates. Every reported performance result comes from modeling, not fabricated hardware.

The Boulder Cryogenic Quantum Testbed at NIST

ANALYSIS Quantum Infrastructure

George Mason’s $7.7 Million Quantum System Makes Openness a Hardware Question

Virginia’s first open-architecture quantum installation aims to let researchers work across processors, controls, software, and networking. The strongest benefit may arrive before quantum advantage: engineers will gain a place to learn how the complete stack fits together.

NIST illustration showing physical atoms grouped into logical qubits for fault-tolerant computation

NEWS Quantum Science

MIT’s Arm Qubit Separates Memory From Motion to Push Quantum Computing Forward

A new superconducting design gives one component the job of preserving quantum information and another the job of interacting with the circuit. Simulations point to fast, accurate operations, but fabrication will decide whether the architecture can deliver those gains in hardware.