Tag

Quantum Sensing

All articles tagged with #quantum sensing

science4 days ago•11 min saved

Prototype differential atom interferometer overcomes laser noise to probe dark matter and primordial gravitational waves

A tabletop prototype using two ultracold strontium atom clouds demonstrates a differential atom interferometer can cancel laser phase noise, revealing faint signals that could indicate dark matter or primordial gravitational waves. This experimentally confirms a key principle for future large-scale quantum sensors (AION) and paves the way for scaling to facilities at CERN or Fermilab to explore new physics.

via SciTechDaily|

#aion #atom-interferometry #dark-matter

science29 days ago•16 min saved

Physicists Unveil the First Nuclear Clock in a Solid-State Crystal

Two independent teams have demonstrated a solid-state nuclear clock using thorium-229 doped into calcium fluoride crystals, showing clock operation and benchmarking against atomic clocks while stabilizing a feedback loop to make it a true clock. The work suggests compact clocks with enhanced resilience to environmental factors that could enable nuclear quantum sensing and precision tests of fundamental physics, including ultralight dark matter, though the technology remains in early stages and will improve with advances in lasers and crystal tech.

via Gizmodo|

#calcium-fluoride #nuclear-clock #quantum-sensing

science1 month ago•4 min saved

Minimal tweaks unlock powerful quantum entanglement

Researchers at the University of Chicago propose a theoretical, cabinet-QED–based method to generate and control a wide range of entangled quantum states by applying selective energy shifts to different groups of atoms, breaking symmetry while preserving controllability. This approach enables robust, highly sensitive quantum sensors that can use standard Ramsey measurements and can stabilize unusual states like the AKLT state, with potential implications for quantum sensing, fundamental physics, and computing; experimental tests are being planned and the work is supported by Q-NEXT.

via ScienceDaily|

#aklt-state #cavity-qed #energy-level-shifts

science1 month ago•2 min saved

Quantum NV-center sensor scheme aims to reveal altermagnet order

University of Buffalo physicists proposed a theoretical quantum-sensor protocol using a diamond NV-center to detect altermagnetic order by measuring anisotropic spin-relaxation as a noninvasive signature. The approach is currently a paper concept with experimental verification to come, published in Physical Review Letters to guide future tests across hundreds of candidate compounds and enable precise identification of altermagnetism.

via ForkLog|

#altermagnets #magnetic-materials #measurement-protocol

science2 months ago•5 min saved

Quantum nanosensors map temperature inside living cancer cells

Scientists created molecular quantum nanosensors made from pentacene embedded in crystals that glow under green light and dim under microwaves in a temperature-dependent way. When introduced into living cancer cells, including the nucleus, these 200–500 nm sensors reveal temperatures inside the cell, showing regional variations up to about 1°C and offering a new tool to study metabolism and chemical reactions at the single-cell level.

via nature.com|

#cancer-cells #cellular-temperature #nanoscience

science4 months ago•12 min saved

From glow to qubits: fluorescent proteins become inside-cell quantum sensors

Researchers are turning fluorescent proteins into qubits to enable quantum sensing inside living cells, offering the potential for ultra-sensitive imaging of magnetic fields, neural activity and cellular stress. While proof-of-principle work exists and proteins are easier to place precisely in cells than NV-diamond sensors, challenges remain in protein stability and boosting sensitivity for robust biomedical applications.

via Nature|

#biological-imaging #fluorescent-proteins #nv-diamond-center

science5 months ago•11 min saved

Graviton trap aims to witness gravity's quantum particle

Scientists at Stevens Institute of Technology and Yale University are launching the world’s first experiment to detect gravitons, using a centimeter-scale resonator filled with superfluid helium cooled to its quantum ground state. A passing gravitational wave should impart energy that becomes a single graviton, converted into a phonon and read out with precision lasers. By scaling the detector from gram-scale to larger detectors, the team hopes to observe gravitons directly and bridge General Relativity with Quantum Mechanics, backed by the Keck Foundation.

via Interesting Engineering|

#graviton #gravity #quantum-mechanics

science9 months ago•4 min saved

Scientists Capture and Harness Quantum Fluctuations for Next-Gen Communication

Researchers at the University of Arizona have achieved a breakthrough by capturing quantum uncertainty in real time using ultrafast squeezed light, which could revolutionize secure communication, quantum sensing, and various scientific applications by enabling more precise measurements and enhanced data security.

via Rude Baguette|

#quantum-communication #quantum-physics #quantum-sensing

science9 months ago•16 min saved

Enhancing Quantum and Solid-State Sensor Sensitivity with Asymmetric Echo Techniques

The article reports on the achievement of spin squeezing in an ensemble of nitrogen-vacancy centers in diamond, demonstrating enhanced quantum sensing capabilities through entanglement and reduced quantum noise, with data available at Harvard Dataverse.

via Nature|

#diamond #nitrogen-vacancy-centers #quantum-entanglement

science9 months ago•7 min saved

Quantum Measurement Tool Unveiled

Researchers have demonstrated that quantum effects can cause heat to flow from cold to hot, contrary to classical thermodynamics, and this phenomenon can be used as a diagnostic tool to detect quantum properties like superposition and entanglement without destroying them, revealing deep connections between thermodynamics and information theory.

via Quanta Magazine|

#heat-flow-reversal #quantum-entanglement #quantum-sensing

science9 months ago•6 min saved

New Evidence of Ancient Human Migration from Turkey to Europe

Recent discoveries include evidence of early human migration routes in Turkey, 112-million-year-old amber fossils from South America, a study on playing badminton in space for astronaut well-being, a breakthrough in quantum squeezing with nanoparticles, and wild chimpanzees consuming alcohol, suggesting deep evolutionary roots for alcohol attraction.

via 404 Media|

#amber-fossils #early-human-migration #paleolithic-artifacts

science10 months ago•4 min saved

Innovative Method Promises Precise Measurement of the Unruh Effect

Hiroshima University researchers propose a feasible method to detect the Unruh effect using fluxon-antifluxon pairs in Josephson junctions, which could bridge the gap between general relativity and quantum mechanics by providing experimental evidence of this elusive phenomenon.

via Phys.org|

#fundamental-physics #josephson-junctions #quantum-physics

science10 months ago•3 min saved

Quantum researchers observe real-time atomic magnetism switching

Researchers at Delft University of Technology have successfully observed real-time switching of the nuclear spin in a single atom using a scanning tunneling microscope, achieving single-shot readout and revealing potential for advanced quantum control and sensing at the atomic level.

via Phys.org|

#nuclear-spin #quantum-physics #quantum-sensing

science10 months ago•2 min saved

Scientists Develop Protein-Based Qubit for Quantum Sensing in Living Cells

Scientists from the University of Chicago have demonstrated that a protein called EYFP can act as a qubit inside living mammalian cells, paving the way for highly precise quantum sensing in biological systems, with potential applications in understanding protein dynamics, gene expression, and disease processes.

via extremetech.com|

#biotechnology #living-cells #protein-qubit

science10 months ago•4 min saved

Scientists Develop Biological Qubits Using Proteins and Cells

Researchers at UChicago have engineered protein qubits within living cells, enabling quantum sensing directly in biological systems, which could revolutionize nanoscale MRI and biological research by allowing direct measurement of quantum properties in living tissues and molecules.

via Phys.org|

#biology #biotechnology #protein-qubits