Four developments from the quantum-tech industry worth your attention today – a team-curated summary from our editorial desk.
D-Wave Demonstrates Hardware Breakthrough for Fault-Tolerant Gate-Model Quantum Computing
D-Wave Quantum has published a peer-reviewed paper in Nature demonstrating a fast, high-fidelity two-qubit entangling gate for its superconducting dual-rail qubit architecture — a result the company says removes one of the biggest remaining barriers to practical, fault-tolerant gate-model quantum computing. The gate achieved roughly 99.9% fidelity with operation times of about 500 nanoseconds while preserving native hardware-level error detection, and D-Wave’s simulations suggest the architecture could cut the logical error rate by a factor of 10 for each added increment of error correction, sharply reducing the number of physical qubits needed to scale. The results feed directly into D-Wave’s gate-model roadmap, which targets a 100-logical-qubit, million-operation system by 2032.
Source: Nature
NIST Sends Entangled Photons Through 62km of Real-World Aerial Fiber
Researchers at the National Institute of Standards and Technology (NIST), the Joint Quantum Institute (a partnership between NIST and the University of Maryland), and quantum-networking startup Qunnect distributed entangled photon pairs over 62 kilometers of commercial fiber strung on poles between NIST’s Gaithersburg campus and the University of Maryland, showing that fragile quantum entanglement can survive the temperature swings, wind and physical stress of real overhead infrastructure rather than a shielded underground line or lab bench. Using Qunnect hardware to stabilize photon polarization in real time, the team distributed 1,500 entangled photons per second and kept photons entangled 92.8% of the time over a 24-hour period. It’s not a distance record — a European group beat it in 2022 — but the researchers call it a genuine stress test showing quantum-networking protocols can work on the noisy, aerial fiber that makes up much of today’s telecom infrastructure.
Source: NIST
DARPA Awards IonQ $28 Million to Mass-Produce Next-Generation Atomic Clocks
The Defense Advanced Research Projects Agency (DARPA) has awarded IonQ a $28 million contract extension, with an option for $30 million more, under DARPA’s “It’s About Time” program to scale production of IonQ’s Evergreen-05 optical atomic clocks. IonQ plans to deliver 125 of the compact, shoebox-sized clocks to U.S. government customers and is investing $15 million of its own in dedicated production space, manufacturing equipment and testing capability. Evergreen-05 is rated for a timing stability of 50 femtoseconds at one second and a projected drift of less than one second over 30 million years, with DARPA targeting mission-critical, GPS-independent uses such as radar, secure communications and precision geolocation.
Source: Businesswire (IonQ press release)
AWS and JPMorganChase Publish New Toolkit for Near-Term Quantum Optimization
Amazon Web Services (AWS) and JPMorganChase researchers have published three papers detailing a toolkit for tackling large-scale optimization problems — like portfolio construction — on near-term neutral-atom quantum hardware. The team’s decomposition pipeline cuts real-world portfolio-optimization problems down by roughly 80% so they fit on today’s quantum devices, while a separate compilation toolkit reduced the qubits needed to encode a 2,700-node citation graph from an estimated 29 million to just tens of qubits. Combining the two into a hybrid algorithm called qReduMIS, the team reported an approximately 89% average success rate on hard problem instances using 231 qubits on QuEra Computing‘s Aquila device, available through AWS’s Amazon Braket.
Source: AWS Quantum Technologies Blog
This digest was researched and written by our AI editorial team (Quark & Prism), supervised by Mischa Hammann. More on our team page. Not investment advice.