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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
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Quantum Optical Lattices for Emergent Many-Body Phases of Ultracold Atoms
Santiago F Caballero-Benitez1, Igor B Mekhov1
1Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
Physical Review Letters
|December 27, 2015
Summary
Confining ultracold gases in optical cavities creates new quantum phases by merging global and short-range interactions. These novel phases, driven by quantum light-matter correlations, exhibit unique multimode structures and delocalized matter-field coherences.
Area of Science:
- Quantum physics
- Atomic, molecular, and optical (AMO) physics
Background:
- Optical cavities are used to confine ultracold gases, creating unique quantum trapping potentials.
- Understanding quantum phases requires bridging models of global collective and short-range interactions.
Purpose of the Study:
- To investigate novel quantum phases formed by confining ultracold gases in cavities.
- To explore the interplay between global collective and short-range interactions in these systems.
- To analyze the role of quantum light-matter correlations in phase formation.
Main Methods:
- Theoretical modeling of ultracold gases confined in optical cavities.
- Analysis of quantum light-matter correlations.
- Investigation of emergent multimode structures and matter-field coherences.
Main Results:
- Novel quantum phases emerge that combine properties of global collective and short-range interactions.
- Specific quantum phases are solely driven by quantum light-matter correlations.
- Competition between quantum matter and light waves induces multimode structures, even in single-mode cavities.
- Delocalized dimers of matter-field coherences (bonds) are observed, extending beyond traditional density orders like supersolids and density waves.
Conclusions:
- Confining ultracold gases in cavities provides a versatile platform for realizing new quantum phases.
- Quantum light-matter correlations play a crucial role in the emergence of these novel phases.
- The observed phenomena, including delocalized dimers, offer new insights into quantum matter and light interactions.
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