Tag

Quantum Coherence

All articles tagged with #quantum coherence

technology19 days ago•60 min saved

Laser-charged quantum battery could store years of energy from a minute’s charge

A team led by the University of Melbourne and CSIRO built a miniature quantum battery that stores energy via quantum coherence in a microcavity (Dicke model); by firing a laser pulse with a 31‑nm bandwidth for a femtosecond (one quadrillionth of a second) they trigger a giant absorption event that charges the battery ultrafast, enabling it to hold a charge for about a million times longer than the charge time—roughly years after a one‑minute charge. Scaling up could allow remote laser charging for drones or quantum computers, though decoherence remains a key challenge.

via Live Science|

#laser-pulse #quantum-battery #quantum-coherence

technology1 month ago•7 min saved

Quantum Mechanics: From Paradox to Tech Powerhouse

Quantum mechanics has evolved from a puzzling theory to the backbone of modern technology, powering lasers, chips, quantum computing, and secure communications. Texas A&M physicist Marlan Scully surveys the journey—from Schrödinger’s cat to coherence and entanglement enabling new sensors and cryptography, to quantum heat engines that can exceed classical limits. The reach extends into biology and cosmology, while open questions about unifying gravity with quantum theory promise a continued scientific adventure.

via SciTechDaily|

#entanglement #lasers #quantum-coherence

science6 months ago•3 min saved

Electrons in Kagome Crystals Exhibit Geometry-Driven Quantum Coherence

Physicists have discovered that electrons in Kagome crystals can synchronize and produce a collective quantum 'song' that is influenced by the crystal's shape, revealing a new way to control quantum states through geometry, with potential implications for future material design.

via Phys.org|

#electron-synchronization #kagome-crystals #material-geometry

science8 months ago•5 min saved

Quantum Physics Breakthrough Sparks Tech Revolution

Scientists have developed a novel polymer capable of maintaining quantum states at room temperature, potentially revolutionizing quantum devices by eliminating the need for ultra-cold environments, with applications in sensors, electronics, and quantum computing, though further optimization is needed.

via Rude Baguette|

#polymer #quantum-coherence #quantum-physics

science8 months ago•6 min saved

MIT Physicists Propose First-Ever Neutrino Laser for Ghost Particle Research

MIT physicists propose a novel concept for a 'neutrino laser' that uses super-cooled radioactive atoms in a Bose-Einstein condensate to produce a coherent, amplified burst of neutrinos, potentially revolutionizing communication and medical technology. They plan to test this idea with tabletop experiments, aiming to harness superradiance to accelerate neutrino production.

via SciTechDaily|

#bose-einstein-condensate #neutrino-laser #quantum-coherence

science8 months ago•6 min saved

Physicists Propose Tabletop Neutrino Laser for Ghost Particle Exploration

MIT physicists propose a novel concept for a neutrino laser that could be created by cooling radioactive atoms to a quantum state, potentially enabling faster neutrino production and new applications in communication and medical imaging.

via Phys.org|

#bose-einstein-condensate #neutrino-laser #quantum-coherence

science10 months ago•4 min saved

Breakthroughs in Antimatter Research Illuminate Universe's Matter Dominance

Researchers at CERN's BASE collaboration have successfully demonstrated the first antimatter quantum bit by trapping and maintaining an antiproton's quantum state for nearly a minute, paving the way for more precise tests of fundamental symmetries between matter and antimatter and advancing quantum sensing techniques.

via Home | CERN|

#antimatter #antiproton #cern

science11 months ago•7 min saved

Revolutionary Twists in Graphene Unlock High-Performance Superconductivity

Researchers have discovered that twisted trilayer graphene exhibits high and tunable kinetic inductance and quantum coherence, providing new insights into unconventional superconductivity and potential applications in quantum technologies, although practical use may require further material development.

via Phys.org|

#kinetic-inductance #moire-materials #quantum-coherence

quantum-computing2 years ago•2 min saved

"Breakthrough: Stable Room Temperature Qubits Achieved for Quantum Computers"

Researchers have achieved quantum coherence at room temperature, a crucial step in the development of quantum computers, by creating an entangled quintet state in electrons using a chromophore embedded in a metal-organic framework. This breakthrough could lead to more efficient generation of multiexciton state qubits and open doors to room-temperature molecular quantum computing and quantum sensing technologies with higher resolutions and sensitivities.

via IFLScience|

#entangled-state #quantum-coherence #quantum-computing

science-and-technology2 years ago•1 min saved

"Room Temperature Breakthrough: Stable Quantum Coherence Achieved"

Researchers at Kyushu University have achieved quantum coherence at room temperature by combining a light-absorbing dye molecule with a metal-organic framework, marking a significant breakthrough in quantum computing and sensing capabilities despite the current nanosecond timeframe for coherence.

via Interesting Engineering|

#kyushu-university #metal-organic-framework #quantum-coherence

science-and-technology2 years ago•3 min saved

Unveiling the Chemical Complexity of Quantum Decoherence

Researchers at the University of Rochester have developed a method to extract the spectral density for molecules in solvent using resonance Raman experiments, allowing for a better understanding of quantum decoherence. By mapping decoherence pathways, scientists can now connect molecular structure with quantum decoherence, opening the door to designing molecules with specific quantum coherence properties. The team demonstrated how electronic superpositions in thymine, a DNA building block, unravel in just 30 femtoseconds following UV light absorption. They also found that chemical modifications to thymine can significantly alter the decoherence rate.

via Phys.org|

#chemistry #molecules #quantum-coherence

science-and-technology2 years ago•3 min saved

"Exploring Quantum Coherence, Surging Coal Emissions, and the Expanding Applications of Snail Mucus"

Researchers have found that ecotourism activities, such as swimming with sharks, can negatively impact the animals by causing stress and disturbed behavior patterns. Per capita coal emissions from G20 countries are rising, despite promises to transition to sustainable energy sources. Scientists have discovered the versatile uses of snail mucus, which can act as an adhesive glue, lubricant, and sunblock lotion. MIT physicists have developed a method to extend the coherence period of nuclear spin ensembles, crucial for quantum computing systems. Astronomers have observed a sun-like star being gradually consumed by a small black hole, shedding light on black hole feeding behavior.

via Phys.org|

#black-hole-feeding-behavior #coal-emissions #quantum-coherence

science2 years ago•3 min saved

Quantum Degenerate Gas Unveils Intricate Many-Body Chemical Reactions

Researchers at the University of Chicago have successfully observed many-body chemical reactions in a quantum degenerate gas, marking a significant step towards understanding and controlling chemical reactions at the quantum level. Using Bose-condensed cesium atoms, the team observed coherent, collective reactions between atoms and molecules, demonstrating macroscopic quantum coherence and Bosonic enhancement. These "super reactions" resemble superconductivity and laser functioning, but with molecules instead of electrons or photons. The findings provide insights into the dynamics of quantum many-body chemical reactions and offer potential applications in precision metrology, quantum information, and quantum control of chemical reactions.

via Phys.org|

#bose-einstein-condensates #chemical-reactions #quantum-coherence