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Quantum Sensors

All articles tagged with #quantum sensors

physics1 month ago

Hidden Synchrony: Two Quantum Clocks Align via Dissipation in Trapped Ions

Physicists demonstrated synchronization between two quantum van der Pol oscillators realized as shared vibrational modes in a trapped-ion pair. The fixed relative phase emerges only in the joint state, not in either oscillator alone, thanks to engineered gain/loss processes and a collective dissipative channel. This hidden synchronization, detected through joint Wigner-function maps, points toward scalable quantum oscillator networks with potential uses in quantum sensors and clocks beyond classical limits.

via American Physical Society|
#dissipation-engineering#physics#quantum-sensors
Seven-Atom Schrödinger Cat Demonstrates Large-Scale Quantum Superposition and Tunneling
science2 months ago

Seven-Atom Schrödinger Cat Demonstrates Large-Scale Quantum Superposition and Tunneling

Researchers cooled a seven-atom cluster in an optical lattice to ultracold temperatures, creating a large macroscopic quantum superposition that tunnels through a barrier higher than its kinetic energy. The work demonstrates quantum tunneling and superposition at a much larger scale than typical, with potential applications in quantum sensing and interferometry. The team envisions scaling the approach toward hundreds of atoms and using these effects to explore gravity–quantum relationships, marking a step toward larger, more complex quantum states.

via The Debrief|
#macroscopic-superposition#quantum-sensors#quantum-tunneling
Canada-led quantum sensors empower new telescope to map the cosmos from the Chilean summit
science3 months ago

Canada-led quantum sensors empower new telescope to map the cosmos from the Chilean summit

Canadian researchers are contributing cryogenic quantum-sensor cameras to the Fred Young Submillimeter Telescope in Chile’s Atacama Desert, a high-altitude instrument designed to map large swaths of the sky in submillimeter wavelengths to study how stars form, how galaxies move, and the nature of dark matter and dark energy. The project involves international partners and will produce terabytes of data processed by dedicated computing centers; first results are expected mid-fall, with public releases about a year later.

via CBC|
#astronomy#canada#cosmology
Distributed quantum sensors tighten ultralight axion dark-matter bounds
science6 months ago

Distributed quantum sensors tighten ultralight axion dark-matter bounds

A multi-city network of hyperpolarized noble-gas spin sensors correlates five lab setups to search for transient, defect-induced axion signals. Through amplified signals and optimized noise filtering, the experiment constrains axion–nucleon coupling across 10 peV to 0.2 μeV, achieving 4.1×10^10 GeV at 84 peV. These bounds surpass some astrophysical limits under different model assumptions and illustrate a path toward detecting transient axion phenomena (waves, axion stars, strings, Q-balls) with distributed quantum sensors.

via Nature|
#axions#dark-matter#noble-gas-spins
"Breakthrough in Quantum Sensors Enables Data Collection from the Past"
science-and-technology2 years ago

"Breakthrough in Quantum Sensors Enables Data Collection from the Past"

Researchers at Washington University in St. Louis, along with collaborators from NIST and the University of Cambridge, have developed a quantum sensor leveraging quantum entanglement that could potentially collect data from the past. This breakthrough, detailed in a study published in Physical Review Letters, involves a two-qubit superconducting quantum processor and demonstrates a quantum advantage that could enable temporally manipulated measurements, marking a significant step toward practical time-travel technology.

via The Debrief|
#entanglement#quantum-physics#quantum-sensors
"Quantum States and Spin-Boson Discovery Unlock New Device Potential"
science-and-technology2 years ago

"Quantum States and Spin-Boson Discovery Unlock New Device Potential"

Researchers from Amsterdam have developed a new method using non-Gaussian states to efficiently describe and configure quantum spin-boson systems, which could significantly advance quantum computing and sensing. This approach allows for the preparation of complex quantum states, potentially enhancing quantum simulation, error correction, and sensor sensitivity. The method, demonstrated for a single spin, aims to extend to multiple spins and bosonic modes, with ongoing efforts to account for environmental disturbances.

via SciTechDaily|
#non-gaussian-states#quantum-computing#quantum-devices
Quantum Sensor Development Overcomes Major Obstacle
science-and-technology2 years ago

Quantum Sensor Development Overcomes Major Obstacle

Researchers from the Niels Bohr Institute have made significant progress in the development of quantum sensors by overcoming a major obstacle in distinguishing signals of interest from various types of noise. Quantum sensors have the potential to revolutionize medical examinations and other fields by detecting extremely small variations in magnetic fields and tissue conductivity. The findings bring quantum sensors closer to practical applications, with potential uses in monitoring the health of unborn children, brain monitoring, and even gravitational wave detection in astrophysics.

via Phys.org|
#gravitational-wave-detection#medical-examinations#nanotechnology
"Breakthrough: Physicists Invent Revolutionary Radio Wave Antenna"
science-and-technology2 years ago

"Breakthrough: Physicists Invent Revolutionary Radio Wave Antenna"

Physicists at the University of Otago have developed a new form of antenna for radio waves using a small glass bulb containing an atomic vapor. The antenna, enabled by atoms in a Rydberg state, offers superior performance with high sensitivity, broad tunability, and small physical size. It eliminates the need for multiple antennas to cover different frequency bands and can be accessed via laser light, making it useful in defense, communications, and satellite technology. The portable design allows for field testing, and the researchers believe it will make quantum sensors more robust and cost-effective for real-world applications.

via Phys.org|
#antenna#physics#quantum-sensors