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Updated: Apr 27, 2026
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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
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Microscopy of Cavity-Induced Density-Wave Ordering in Ultracold Gases.
Tabea Bühler1, Aurélien Fabre1, Gaia Bolognini1
1Ecole Polytechnique Fédérale de Lausanne, Institute of Physics and Center for Quantum Science and Engineering, CH-1015 Lausanne, Switzerland.
Physical Review Letters
|April 25, 2026
Summary
Researchers imaged density-wave ordering in a unitary Fermi gas using cavity-mediated interactions. They observed long-range correlations and atom-photon correlations, confirming optical and atomic observable correspondence.
Area of Science:
- Quantum physics
- Atomic physics
- Optics
Background:
- Cavity-mediated interactions are crucial for understanding quantum phenomena.
- Unitary Fermi gases provide a unique platform for studying quantum many-body physics.
- Density-wave ordering is a key emergent behavior in interacting quantum systems.
Purpose of the Study:
- To demonstrate high-resolution in situ imaging of density-wave ordering.
- To investigate the role of cavity-mediated interactions in forming density waves.
- To explore atom-photon correlations and their relation to atomic observables.
Main Methods:
- Utilizing a unitary Fermi gas in an optical cavity.
- Employing high-resolution in situ imaging techniques.
- Real-time readout of cavity photons for atom-photon correlation measurements.
Main Results:
- Observed long-range spatial correlations during density-wave formation.
- Demonstrated pattern control by the cavity mode structure.
- Confirmed correspondence between optical and atomic observables via atom-photon correlations.
Conclusions:
- The study successfully imaged and characterized density-wave ordering in a unitary Fermi gas.
- Atom-photon correlations provide a powerful tool for investigating quantum gas dynamics.
- The system offers new avenues for studying long-range interacting quantum gases.
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