Physics

253 reports

Nanometre Fabrication Shifts Explain Transmon Qubit Performance Gaps

A blinded study of 22 superconducting transmons links twofold T1 variation to nanometre-scale oxide and etch differences while finding no clear role for macroscopic surface defects

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Entanglement Swapping Faces a Patent Eligibility Test

Entanglement swapping could link distant quantum nodes through a Bell-state measurement, but a patent claim may fail if it captures only quantum mechanics without a specific hardware advance

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DC-Biased SQUID Stabilizes Multi-Photon Cat Qubits

Alice & Bob and ENS Lyon used a microvolt-scale DC-biased SQUID to control photon conversion between superconducting resonators and demonstrate multi-photon dissipation for cat-qubit stabilization.

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Roadrunner Quantum Lab Opens Albuquerque Quantum Hardware Facility

Roadrunner Quantum Lab opened on September 29, 2026, as a 35,000-square-foot Albuquerque facility linking quantum startups with Sandia and Los Alamos scientists, independent benchmarking, cryogenic testing and packaging infrastructure.

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Xanadu and Bluefors Target the Cryogenic Bottleneck in Quantum Scaling

Xanadu and Bluefors announced a multi-million-dollar partnership on September 29, 2026, to develop modular cryogenic infrastructure for photonic quantum systems whose SNSPD detectors must operate near 2 kelvins.

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KIST Pushes Korean Quantum Startups Toward US Market Entry

KIST used the Quantum World Congress in College Park to connect South Korean quantum startups with D-Wave, Microsoft and East Asian research networks, while OptiQ-Labs plans a US East Coast office for November 2026.

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Quantum Computing Faces Its Hardest Test Beyond Qubit Counts

Quantum processors are no longer judged only as faster classical machines. Their value depends on whether real workloads can be mapped to quantum evolution and run reliably inside hybrid systems with effective error correction.

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Infleqtion Entangles 30 Logical Qubits on Neutral Atoms

Infleqtion announced on September 24, 2026, that its commercial Sqale neutral-atom processor had entangled 30 logical qubits using 80 physical qubits. The demonstration combined encoded atom blocks, dynamic shuttling, a lower-overhead logical gate and software-assisted loss recovery.

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Quantum Hardware Depends on a Borderless Supply Network

A survey of 160 quantum enterprises across 15 countries finds that 90% depend on foreign suppliers while 74% sell abroad, revealing why protectionist controls could disrupt the sector.

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Standing Wave Cooling Brings Trapped Ions Near Ground State

Cornell researchers used a 397 nm standing wave on a fabricated ion-trap chip to cool a single 40Ca+ ion near its motional ground state in 150 microseconds

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Hydrazine Freeze-Thaw Cycles Can Put NASA Hardware at Risk

NASA's technical guidance warns that repeated freeze-thaw exposure can rupture hydrazine plumbing, create slush blockages and reduce the service life of propulsion and auxiliary systems.

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Equinoxes Reveal Earth's Changing Balance of Sunlight

The 2026 equinoxes mark the moments when the Sun crosses Earth's equatorial plane, revealing why the seasons reverse between hemispheres and why day and night are never perfectly equal.

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COSI Detector Assembly Moves Toward Gamma-Ray Science

A detector assembly for NASA's COSI gamma-ray telescope was raised from a laboratory table on July 8, 2026, revealing hardware designed to study matter, antimatter and dying stars as the mission prepares for a planned 2027 launch.

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Quantum-Safe Network Platform Launches on Existing Fiber in Europe

Q-SAFE Solutions has introduced a quantum-safe communications platform built in the EU-27, combining quantum key distribution and post-quantum cryptography for telecom, infrastructure, and government networks-no dedicated dark fiber required.

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Surface code error suppression tested on IBM heavy-hex quantum processors

A team from the University of Southern California and Quantum Elements has experimentally tested surface code error suppression on IBM's 156-qubit heavy-hex superconducting processors, challenging assumptions about lattice geometry and quantum error correction.

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Riverlane opens US quantum error correction hub in Maryland

Riverlane has set up its US headquarters in Maryland's Discovery District to speed up real-time quantum error correction projects and work more closely with quantum hardware makers and academic researchers.

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Erasure Noise Simulator Targets Quantum Error Mitigation in Qiskit Circuits

Oxford Quantum Circuits has launched erado, a Python library that simulates erasure noise and post-selection in Qiskit circuits. The tool enables researchers to probe error mitigation strategies before running algorithms on superconducting quantum hardware.

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Patent eligibility for quantum dot Pauli Z gate hardware faces legal scrutiny

A proposed hardware method for implementing the Pauli Z gate in quantum dot-based quantum computers highlights the unresolved legal barriers to patenting quantum operations that rely on established physical laws.

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Brazilian Research Institute Orders On-Premises Superconducting Quantum Computer

IQM Quantum Computers will supply its IQM Spark superconducting quantum system to Brazil's Eldorado Research Institute, marking the first time a private research institution in South America has purchased and installed a quantum computer on site.

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Trapped-ion quantum processor trims engineering simulation time by 14 percent

IonQ, Synopsys, and NVIDIA have linked a trapped-ion quantum processor with large-scale engineering simulation software, reporting up to 14.6% total runtime savings in benchmarked industrial workloads.

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DOE launches $215 million competition for logical qubit quantum computers

The US Department of Energy is offering $215 million to teams that can build quantum computers with at least 100 logical qubits and run hundreds of millions of fault-tolerant operations, alongside a $45 million program for independent hardware benchmarking.

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Vampire white dwarfs can collapse into neutron stars under precise conditions

Researchers have modeled how certain white dwarfs feeding on companion stars can collapse into neutron stars if their mass and accretion rate fall within a narrow range, revealing a rare but physically distinct pathway for stellar evolution.

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Falqon Systems launches multi-node quantum secure networks across Europe

Falqon Systems, formerly Q*Bird, is rolling out operational quantum secure networks in several European countries using measurement-device-independent quantum key distribution and hybrid key management.

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Casper College launches quantum education program with NSF funding

Casper College has secured a $444,059 National Science Foundation grant to build a statewide quantum workforce pipeline, distributing experimental kits and launching new educational programs across Wyoming

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Spain Launches Quantum Nanofabrication Facility for Device Prototyping

A new quantum nanofabrication area at IMB-CNM in Barcelona brings advanced electron-beam lithography and metrology tools to Spain's largest cleanroom for quantum device prototyping, aiming to bridge laboratory research and industrial pilot lines

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Silicon Spin Qubit Chip Integrates Quantum Gates and Readout on 300mm Wafer

Quobly has demonstrated single-chip readout and quantum gate operations on its QSOI architecture, fabricated with industrial 300mm FD-SOI CMOS technology and enriched silicon-28, marking a step toward scalable silicon-based quantum processors

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Fujitsu Releases OpenQARP to Tackle Quantum Software Complexity

Fujitsu has released OpenQARP, an open-source quantum application framework with over 100 modular components. The package is designed to reduce code complexity for chemistry, materials, and optimization workflows on NISQ and future fault-tolerant quantum systems.

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Parity Twine Optimizer Cuts Quantum Circuit Depth in IBM Qiskit

ParityQC has released the Parity Twine Optimizer for IBM Qiskit, a compiler module designed to minimize two-qubit gate count and circuit depth by mapping optimization problems directly onto quantum hardware coupling maps.

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Superconducting Quantum Processor Runs Qubit-Efficient Optimization Algorithm

Rigetti Computing has used a superconducting quantum processor to run an optimization algorithm that packs more classical variables into each qubit, letting the hardware tackle larger problems with fewer resources. The team benchmarked the approach against standard methods.

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Photonic Inc Plans CA$500M Silicon Quantum Fab in Vancouver

Photonic Inc has put forward Project VANGUARD, a CA$500 million semiconductor fabrication and packaging facility in Vancouver. The site would give Canadian companies a domestic option for prototyping and scaling quantum, AI, and defense hardware.

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Zapata Quantum Restructures After Failed SPAC and Cancer Research Milestone

After a failed SPAC deal in 2024 left Zapata Quantum with new debt and little fresh capital, the company restructured and shifted its focus. Zapata now highlights progress in quantum resource estimation and cancer research, but faces ongoing engineering and scalability hurdles.

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US Confirms Deployment of Space-Based Weapons Amid Treaty Concerns

The US Air Force has acknowledged the presence of operational space control weapons in Earth orbit, prompting renewed scrutiny of international agreements and the risk of an orbital arms race

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European Quantum Network Field Trials Move Beyond Laboratory Prototypes

A new partnership between GÉANT and the Quantum Internet Alliance aims to connect quantum communication testbeds to Europe's research fiber backbone, advancing field trials for quantum key distribution and distributed quantum computing.

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Qubic awarded Canadian contract for cryogenic quantum amplifiers

Qubic will deliver nine kinetic inductance traveling wave parametric amplifiers and control software under a CA$1.5 million federal contract, aiming to cut cryogenic power use in quantum measurement setups.

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Quantum hardware companies bring in new leaders to tackle engineering hurdles

Senior hires at Q.ANT, Qtonic Quantum, QuantrolOx, and Leiden Cryogenics reflect a push to solve the practical challenges of building and scaling quantum hardware, photonic processors, and cryogenic systems.

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