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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
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Pattern Formation and Exotic Order in Driven-Dissipative Bose-Hubbard Systems
Zijian Wang1,2, Carlos Navarrete-Benlloch1,3, Zi Cai1,3,4
1Wilczek Quantum Center, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
Physical Review Letters
|September 25, 2020
Summary
Researchers explored exotic bosonic states in driven-dissipative systems. They discovered a novel superfluid state with bosons condensing on a ring in momentum space, offering new avenues for quantum many-body physics research.
Area of Science:
- Condensed Matter Physics
- Quantum Many-Body Systems
- Quantum Optics
Background:
- Superconducting circuits enable exploration of novel quantum phenomena.
- Driven-dissipative systems exhibit complex emergent behaviors.
- Bosonic tight-binding models are crucial for understanding quantum systems.
Purpose of the Study:
- Investigate unconventional bosonic tight-binding models in driven-dissipative systems.
- Characterize emergent exotic bosonic states and their properties.
- Propose experimental implementations and stabilization methods.
Main Methods:
- Focus on a two-dimensional driven-dissipative Bose-Hubbard model.
- Analyze steady states and condensation phenomena.
- Examine the interplay of driving, dissipation, and lattice effects.
Main Results:
- Observed condensation of bosons on a
- Bose surface
- in momentum space.
- Identified an exotic superfluid state with condensation on a closed ring.
- Demonstrated a purely diffusive relaxation spectrum around the condensate.
Conclusions:
- The study reveals a novel superfluid state with no classical counterpart.
- The findings offer a pathway for experimental realization in superconducting circuits.
- This work addresses open problems in condensed-matter physics.
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