Cold atoms and matter waves is a research area focused on the quantum behavior of dilute atomic gases cooled to microkelvin or nanokelvin temperatures, where their de Broglie wavelengths become comparable to interparticle spacing and wave-like properties dominate. It encompasses the production and manipulation of Bose–Einstein condensates and degenerate Fermi gases, coherent control of atomic matter waves using optical and magnetic potentials, and exploration of many-body quantum phenomena in engineered lattices and traps. The field underpins precision metrology, quantum simulation, and interferometry by exploiting long coherence times, tunable interactions, and highly controllable external degrees of freedom of ultracold atomic ensembles.
While atomic clocks are already the most precise timekeeping devices in the universe, physicists are working hard to improve their accuracy even further. One way is by leveraging spin-squeezed states in clock atoms.
Optics & Photonics
Feb 19, 2024
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226
Neutron stars in the universe, ultracold atomic gases in the laboratory, and the quark–gluon plasma created in collisions of atomic nuclei at the Large Hadron Collider (LHC): they may seem totally unrelated but, surprisingly ...
General Physics
Feb 16, 2024
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290
Making quantum systems more scalable is one of the key requirements for the further development of quantum computers because the advantages they offer become increasingly evident as the systems are scaled up. Researchers ...
Optics & Photonics
Feb 15, 2024
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292
An international research team from Innsbruck and Geneva has developed a new thermometry method to measure temperatures for low-dimensional quantum gases. With this method it was found that compressing a gas may lead to cooling. ...
Quantum Physics
Feb 15, 2024
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189
Atomic clocks are a class of clocks that leverage resonance frequencies of atoms to keep time with high precision. While these clocks have become increasingly advanced and accurate over the years, existing versions might ...
In quantum sensing, atomic-scale quantum systems are used to measure electromagnetic fields, as well as properties like rotation, acceleration, and distance, far more precisely than classical sensors can. The technology could ...
Condensed Matter
Feb 8, 2024
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207
A research team has, for the first time, observed and quantitatively characterized the many-body pairing pseudogap in unitary Fermi gases. This achievement, pursued by the ultracold atomic community for nearly two decades, ...
Superconductivity
Feb 7, 2024
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425
A team of experimentalists at the Max Planck Institute of Quantum Optics (MPQ) and theorists at the Chinese Academy of Sciences (CAS) has succeeded for the first time in populating and stabilizing a new type of molecule, ...
General Physics
Jan 31, 2024
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535
In a new study published in Science today, JILA and NIST (National Institute of Standards and Technology) Fellow Jun Ye and his research team have taken a significant step in understanding the intricate and collective light-atom ...
General Physics
Jan 27, 2024
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253
Quantum technologies bring the promise of faster computing, enhanced drug development and new sensing applications. However, quantum behaviors are difficult to study experimentally since most systems can only sustain quantum ...
Condensed Matter
Jan 18, 2024
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130
