Tag

Quantum

All articles tagged with #quantum

science3 days ago•53 min saved

Entropy-Clock: Time Emerges from a Lab-Ccreated Mini‑Universe

A University of Birmingham team used a Bose‑Einstein condensate split into two halves to emulate a universe with no external clock. By letting entropy flow between the halves, they defined an internal clock—entropic time—that ordered events in the bright sector and could run faster, slower, or stop altogether as entropy exchange varied. The researchers also derived a Schrödinger equation using this internal time, supporting the idea that time and its arrow may emerge from internal relations and observer ignorance rather than an external time parameter.

via Yahoo|

#bose-einstein-condensate #entropy #quantum

science5 days ago•14 min saved

Penrose's Quantum Conundrum: Is Consciousness Beyond Brain Computation?

Physicist Roger Penrose argues consciousness cannot be explained by ordinary neural computation and may require physics not yet discovered, via the Orch-OR theory with Hameroff which posits gravity-linked quantum collapse inside microtubules; while testable, it remains controversial with mixed experimental support and is not universally accepted as the mechanism behind mind.

via Space Daily|

#consciousness #microtubules #orch-or

science7 days ago•6 min saved

Quantum Time Reversal Realized: Measuring to Reverse Time's Arrow and Harvest Energy

Researchers have developed quantum-control protocols that, by integrating quantum measurements with feedback, can suppress or reverse the arrow of time in quantum systems. By designing a control Hamiltonian that mirrors measurement effects, they create time-reversed or distorted trajectories and even a measurement-based engine that extracts energy from the act of observation. The work—published in Physical Review X—aims to improve quantum state control and could enable new methods for powering quantum computers and batteries, with planned experimental tests using superconducting qubits.

via ScienceDaily|

#maxwells-demon #measurement #quantum

technology11 days ago•3 min saved

NIST-SRI Launch Center to Accelerate Quantum Manufacturing

NIST and SRI International are creating the Quantum Manufacturing Engineering Center (QMEC) with an initial $20 million to accelerate the scalable manufacture of high‑performance quantum components and systems, address manufacturing barriers, and strengthen the U.S. quantum industry through public‑private collaboration and connections to the Quantum Economic Development Consortium (QED-C).

via National Institute of Standards and Technology (.gov)|

#manufacturing #nist #qed-c

technology16 days ago•3 min saved

NSF backs five teams to design next-gen quantum tech through National Quantum Virtual Laboratory

The National Science Foundation is funding five new teams—joining four from 2025—with $20 million to design experimental quantum technologies via the National Quantum Virtual Laboratory. Each team will receive $4 million over two years to develop integrated systems in sensors, networks and computing and to prepare for implementation in 2026. The effort includes partnerships with federal labs, industry and educators, and aims to translate quantum research into real-world applications while expanding the quantum workforce.

via National Science Foundation (.gov)|

#networks #nsf #quantum

science18 days ago•7 min saved

Quantum Control Reverses the Arrow of Time in the Lab

Researchers developed measurement-based quantum control that, by combining measurements, feedback, and tailored control fields, can stretch or reverse the apparent arrow of time in quantum systems, creating time-reversed trajectories and a measurement-powered engine that can extract energy from monitoring; the work, published in Physical Review X, points to new methods for quantum state preparation and energy management with platforms like superconducting qubits.

via SciTechDaily|

#measurement #quantum #quantum-control

technology18 days ago•12 min saved

White House Unveils Unified Quantum Initiative to Cement U.S. Tech Leadership

The White House issued Executive Order 14411 to accelerate U.S. leadership in quantum information science and technology (QIST) by updating the National Quantum Strategy, launching the QC-ADDS program to develop a scalable quantum computer, prioritizing next‑gen sensors and quantum networking, strengthening domestic QIST supply chains, safeguarding national security, expanding the quantum workforce, and coordinating international partnerships with allies, with multi‑agency timelines, potential private partnerships, and annual reporting to ensure commercialization, security, and scientific advancement keep pace with global competitors.

via The White House (.gov)|

#executive-order #national-security #qist

science21 days ago•5 min saved

Time Emerges from Entropy: Lab Mini-Universe Redefines Temporal Reality

Physicist Giovanni Barontini built a lab-sized ‘mini-universe’ by cooling ~24,000 rubidium atoms into a Bose-Einstein condensate and trapping them in a two-region optical setup. The atoms’ movement between a bright (observed) and a dark (unobserved) sector creates entropy exchange that defines an internal, emergent time—time that flows due to entropy rather than an external clock—offering experimental insight into time in quantum gravity and cyclic cosmology.

via ScienceAlert|

#bose-einstein-condensate #entropy #mini-universe

science23 days ago•41 min saved

One Photon, a Cascade of Particles: Quantum Split Defies Simple Expectations

Physicists attempted to split a single photon and instead observed a surprisingly large swarm of particles arising from the process, revealing complex quantum-field dynamics and particle-creation effects that go beyond a straightforward division of light. The finding challenges simple intuitions about how photons behave when energy is redistributed and points to richer pathways for light–matter interactions at extreme conditions.

via Yahoo|

#experiment #particle #photon

space24 days ago•5 min saved

Space Station Cold Atom Lab Upgraded to Probe Bigger Quantum States

NASA upgraded the Space Station’s Cold Atom Lab with a redesigned magnetic trap and new gas-source hardware, enabling larger Bose-Einstein condensates and longer microgravity experiments to study ultracold quantum gases and advance space-based quantum technologies.

via NASA (.gov)|

#bose-einstein-condensate #cold-atom-lab #international-space-station

science1 month ago•5 min saved

Quantum Oddity: Photons Appear to Exit an Atomic Cloud Before Entering

Physicists used weak measurements to probe how long photons spend in a rubidium atomic cloud as they travel straight through. They found a negative dwell time for those that pass, meaning the photons seem to arrive at the far side before they would have if they had spent time in the cloud, a result that matches the negative time inferred from arrival statistics. The effect is not an artifact of the measurement but a real, measurable quantum phenomenon explained by standard physics, highlighting that negative time in quantum interactions is possible and observable.

via SciTechDaily|

#negative-time #photons #quantum

science1 month ago•3 min saved

Sunlight Sparks Laser-Free Quantum Ghost Imaging

First demonstration of sunlight-pumped spontaneous parametric down-conversion (SPDC) paired with ghost imaging, producing quantum-correlated photons with a passive, sunlight-powered source. The setup achieved about 90.7% ghost-imaging visibility (near 95.5% with a 405 nm laser) and used a sun-tracking system and nonlinear crystal, suggesting potential for quantum imaging in remote or space environments while highlighting future gains from improved collection, crystal design, and reconstruction methods.

via SciTechDaily|

#ghost-imaging #photons #quantum

science1 month ago•3 min saved

NSF bets $1.5B on X-Labs to unlock breakthrough science

The National Science Foundation announced NSF X-Labs, a decade-long initiative pledging up to $1.5 billion to fund independent, milestone-driven research teams outside traditional institutions, aiming to turn early concepts into commercially viable platforms. Initial topics cover Scientific Instrumentation for Sensing and Imaging and Quantum Systems: Interconnects and Integrated Photonics, with additional areas to be announced as the program progresses.

via U.S. National Science Foundation (.gov)|

#independent-research-teams #milestone-based-funding #nsf

science2 months ago•12 min saved

Quantum Clocks Probe If Time Itself Can Be in Superposition

Physicists propose using ultra-precise atomic clocks and trapped ions to test whether time can behave as a quantum object, potentially existing in multiple states at once. By cooling ions, controlling quantum states, and exploring squeezed vacuum states, the work aims to reveal quantum signatures of time and explore how relativity and quantum mechanics describe the flow of time.

via SciTechDaily|

#atomic-clocks #quantum #relativity

physics-and-chemistry2 months ago•16 min saved

New Theory Reveals Why a Quantum Gas Keeps Its Cool Under Energy Kicks

Physicists have built a theoretical framework linking interparticle interaction strength to the momentum-kick amplitude in a strongly interacting one-dimensional quantum gas, showing a critical regime where external energy stops being absorbed due to dynamical localization. The model explains why the gas resists heating, suggests the mechanism may apply to other quantum systems, and sets the stage for future experimental tests to explore finite-size and thermodynamic-limit behavior.

via Gizmodo|

#dynamical-localization #energy-absorption #many-body-physics