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Quantum Computing

All articles tagged with #quantum computing

technology1 day ago•14 min saved

Quantum batteries defy charging rules by charging faster as they grow

Scientists at CSIRO have unveiled the world’s first working quantum battery prototype that charges faster as its size increases due to a quantum effect called superabsorption inside an optical microcavity. The setup enables femtosecond charging and nanosecond energy storage at room temperature, offering a proof of concept that quantum devices could be powered more efficiently—and perhaps someday energize everyday gadgets. However, the energy stored today is tiny, and challenges like decoherence and energy extraction remain, leaving the path to practical, large-scale use uncertain and likely focused on quantum computing first.

via BBC|

#energy-storage #optical-microcavity #quantum-battery

technology7 days ago•19 min saved

Krypton sputtering unlocks low-temperature Ta films for scalable quantum devices

Researchers show krypton gas in magnetron sputtering enables cubic bcc tantalum films on silicon at around 200°C, broadening the fabrication window for quantum hardware. These krypton-sputtered Ta films deliver low microwave losses in resonators, while higher-temperature Ta films suffer from Ta–Si intermixing and higher losses. Notably, transmon qubits fabricated with these films achieved a compact 20‑μm capacitor gap and quality factors up to 16.9 million, indicating a scalable route to high-performance superconducting quantum devices.

via Nature|

#krypton-sputtering #note-extra-tag-removed-to-fit-5-total #quantum-computing

technology18 days ago•8 min saved

AWS Quantum Claim Challenges Lattice-Crypto Foundations

An AWS cryptography researcher’s preprint claims a polynomial-time quantum algorithm for the Dihedral Coset Problem, which could theoretically enable efficient solutions to lattice problems underpinning post-quantum cryptography. The work is preliminary and theoretical, does not attack deployed standards or estimate hardware needs, and will require independent peer review to verify its correctness, practicality, and implications for real-world cryptography.

via The Quantum Insider|

#dihedral-coset-problem #lattice-cryptography #polynomial-time-algorithm

technology24 days ago•110 min saved

IBM claims quantum advantage in three experiments, invites verification

IBM and partner teams report achieving quantum advantage in three experiments on its Quantum Heron R3 system, using quantum error mitigation to validate results against a classical supercomputer (Fugaku) and testing both Floquet Ising-model computations and Clifford/T-gate circuits; the results, posted as arXiv preprints, aim to establish a verifiable trust stack but require independent verification as classical challenges continue, underscoring that quantum advantage is still an early, contestable milestone.

via Live Science|

#error-mitigation #floquet-transverse-field-ising-model #ibm

technology25 days ago•18 min saved

IBM Unveils Real-Time Verification for Quantum Calculations

IBM and partners published three papers detailing real-time verification methods to confirm quantum calculations’ accuracy as they run, addressing a key hurdle in quantum computing by enabling trust in outputs beyond classical validation; this supports IBM’s multi-billion-dollar quantum program and signals progress toward reliable quantum advantage.

via Barron's|

#ibm #quantum-computing #research

technology26 days ago•7 min saved

Spin qubits accelerate toward practical quantum machines

Multiple research teams report major advances in semiconductor spin-qubit quantum devices, achieving very low error rates around 0.2% on chips with 18 and 53 qubits, challenging assumptions that spin qubits lag behind superconducting and neutral-atom approaches and signaling practical progress as IBM moves to acquire HRL amid growing industry momentum.

via nature.com|

#hrl-laboratories #quantum-computing #qutech

technology26 days ago•10 min saved

Three routes toward verifiable quantum advantage on today's noisy hardware

IBM, with partners RIKEN and Qedma, highlights three approaches that demonstrate verifiable quantum advantage on imperfect quantum hardware: robust error mitigation and Floquet-Ising modeling; a Chicago–IBM method using mostly Clifford gates with targeted non-Clifford T gates plus peripheral qubits for error detection; and a quantum-echo–like protocol with controlled noise characterization to bound outcomes. While not yet practically useful, the work advances trustworthy quantum results and lays groundwork for future error-corrected machines and real-world applications.

via Ars Technica|

#error-mitigation #ibm #quantum-advantage

science27 days ago•52 min saved

Autonomous Quantum Bath Achieves Long-Distance Qubit Entanglement

Physicists from ISTA and TU Munich have experimentally confirmed a 20-year entanglement theory by using a quantum bath of light to autonomously entangle distant qubits, achieving stable entanglement over arbitrary distances and paving the way for scalable quantum networks and computing; the work is published as a proof-of-concept in Physical Review X.

via Yahoo|

#physical-review-x #quantum-bath #quantum-computing

business1 month ago•2 min saved

IBM trims 2026 outlook as AI-driven productivity push pins hopes on margins

IBM's Q2 2026 results missed consensus even after lowering its full-year growth target; revenue was $17.16B and adjusted EPS $2.93, both shy of expectations, with 1% revenue growth YoY and net income of $2.17B. Management cut 2026 constant-currency revenue growth to 4-5% (from above 5%) while aiming for about $1B more in free cash flow. The miss came from weaker Z mainframe and transaction-processing software sales, triggering a 25% one-day stock drop—the steepest on record. Segment results were soft in infrastructure (-7%) and mainframe (-42%) but software grew 5% to $7.76B; consulting was flat. IBM also signed a letter of intent to build a U.S. quantum chip foundry and launched the Bob AI coding tool used by 80,000 employees as it touts productivity gains from AI to boost margins and cash flow.

via CNBC|

#ai #business #earnings

science1 month ago•14 min saved

Quantum Basics: From Spooky Action to a New Computing Era

A plain‑language primer on quantum ideas: at tiny scales particles can be in superpositions and only take a definite state when measured, while entangled particles remain linked across distances. These quirks enable qubits that can encode many possibilities in parallel, potentially solving problems in drug design, materials science and cryptography far faster than classical computers. Real-world quantum tech is still fragile and not a substitute for everyday tasks; nonetheless, progress raises both exciting capabilities and security/ethical questions as encryption faces new risks and quantum‑safe networks develop.

via The Conversation|

#cryptography #entanglement #quantum-computing

technology1 month ago•6 min saved

Quantum-Boosted AI Maps Untapped Peptides for Next-Gen Therapies

DTU researchers combined a small printer-sized quantum computer with a generative AI model to design novel peptides that bind target proteins, producing more diverse and effective candidates—especially where data are scarce. The hybrid quantum-AI workflow could accelerate vaccine and immunotherapy development for underserved populations, but quantum hardware remains nascent and this is an early, incremental step rather than a breakthrough.

via WIRED|

#drug-discovery #generative-ai #peptides

science1 month ago•4 min saved

Quantum Mechanics: From Paradox to Everyday Technology

A Science perspective shows how quantum mechanics evolved from a puzzling 20th‑century idea to the foundation of lasers, microchips, secure communications, and emerging quantum computers, driven by coherence and entanglement; the piece highlights quantum heat engines that may exceed classical limits and notes expanding applications in biology, gravity, and turbulence, with open questions about quantizing gravity and the future impact of quantum technologies.

via ScienceDaily|

#entanglement #quantum-coherence #quantum-computing

science1 month ago•5 min saved

Graphene's layered superconductivity defies field norms, strengthens when pushed

MIT researchers report multiple superconducting states in rhombohedral graphene layers (4- and 5-layer stacks); notably, some states are enhanced by magnetic fields, raising the transition temperature from about 55 millikelvin to ~90 millikelvin and increasing the sustainable current by 50–60%, with the outcome depending on electron density and field orientation. This challenges the usual view that magnetic fields destroy superconductivity and may have implications for quantum computing, though experiments still require ultra-cold conditions and specialized setups.

via ScienceAlert|

#graphene #magnetic-field #quantum-computing

science-policy1 month ago•7 min saved

Genesis Mission Takes Center Stage in US AI and Quantum Push

Darío Gil, the DoE’s science under-secretary, is leading a high-profile push into AI and quantum science through the Genesis initiative, which aims to create an overarching AI platform that connects scientific instruments, supercomputers, and data across 17 national labs. The first Genesis funding round drew about 5,000 proposals and $293 million in awards, with the program totaling roughly $520 million so far. The effort coincides with a 2028 target to build a fault-tolerant quantum computer, even as researchers worry that basic-science funding could be squeezed by AI investments. Gil argues the funds will remain spread across disciplines and emphasizes collaboration with industry and academia to harness, safeguard, and guide AI’s future.

via Nature|

#artificial-intelligence #department-of-energy #genesis-mission

technology1 month ago•4 min saved

Trump's Quantum Push: A Government Bet on a Decades-Long Tech Wave

President Trump signed an executive order directing a broad, government-wide push to accelerate quantum computing—funding, secure supply chains, grow the workforce, and curb rivals’ advances—reflecting national-security stakes and the field’s hype. Quantum tech leverages qubits in superposition and entanglement to solve certain problems more efficiently than classical computers, with near-term promise in drug discovery, materials science, and optimization, but current hardware is fragile and far from routine use. Industry growth is projected to be massive, driven by patents and investments, yet experts warn the gap between theory and practice is wide and timelines are measured, making this a long-term bet that could also spur a new wave of quantum startups.

via Mashable|

#executive-order #hype-cycle #national-security