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A time crystal made of giant atoms

Scientists at Tsinghua University and TU Wien have created a time crystal made of giant Rydberg atoms, exhibiting spontaneous symmetry breaking and oscillating light absorption. This breakthrough deepens our understanding of the time crystal phenomenon, offering potential applications in sensors.

SourceVienna University of Technology·JournalNature Physics·TypeExperimental study·DateJul 9, 2024

Some like it hot

Researchers from Kyoto University have demonstrated the thermal quantum Mpemba effect in a wide range of initial conditions, where hotter quantum systems cool faster than initially colder ones. The team used a quantum dot connected to a heat bath and observed anomalous thermal relaxation at later times.

SourceKyoto University·JournalPhysical Review Letters·DateAug 29, 2023

Standoff coherent Raman spectrometer

Researchers have developed a novel air-laser-based standoff Raman spectrometer with high temporal and frequency resolutions. The device enables remote detection of chemical species in real time, monitoring their rovibronic levels and populations in the frequency domain.

SourceUltrafast Science·JournalUltrafast Science·TypeExperimental study·DateDec 15, 2022

Scientists are unravelling the mystery of the arrow of time

Researchers at CUNY Graduate Center explore how particles and cells give rise to large-scale dynamics that we experience as the passage of time. They found that the arrow of time emerges from simple interactions between pairs of neurons, not large groups. This discovery has implications for physics, neuroscience, and biology.

SourceThe Graduate Center, CUNY·JournalPhysical Review Letters·TypeMeta-analysis·DateAug 22, 2022

Inferring the size of a collective of self-propelled Vicsek particles from the random motion of a single unit

Researchers at NYU Tandon School of Engineering propose a paradigm to solve the problem of inferring collective size from individual behaviors. By observing self-propelled Vicsek particles, they show that the time rate of growth of mean square heading is sufficient to predict the number of particles under particular parameters.

SourceNYU Tandon School of Engineering·JournalCommunications Physics·TypeData/statistical analysis·DateApr 11, 2022

Quantum simulation more stable than expected

Researchers at University of Innsbruck discover that digital quantum simulation can retain controlled Trotter errors for local observables, reducing the number of required gate operations. This breakthrough makes digital quantum simulation more accessible to current day quantum devices.

SourceUniversity of Innsbruck·JournalScience Advances·DateApr 12, 2019