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Updated: Aug 29, 2025

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
One- and Two-Axis Squeezing via Laser Coupling in an Atomic Fermi-Hubbard Model.
T Hernández Yanes1, M Płodzień2, M Mackoit Sinkevičienė3
1Institute of Physics PAS, Aleja Lotnikow 32/46, 02-668 Warszawa, Poland.
This study demonstrates activating quantum spin-squeezing protocols in ultracold atomic fermions using laser coupling. These methods are key for advancing quantum technologies and precision measurements.
Area of Science:
- Quantum physics
- Atomic physics
- Quantum information science
Background:
- Correlated many-body quantum states are essential for quantum technologies and metrology.
- Spin-squeezing protocols, like one-axis twisting and two-axis countertwisting, are methods for generating these states.
Purpose of the Study:
- To demonstrate the activation of both one-axis twisting and two-axis countertwisting spin-squeezing protocols.
- To achieve this in a system of ultracold atomic fermions within the Mott insulating phase.
Main Methods:
- Utilizing a position-dependent laser coupling to manipulate the atomic internal states.
- Implementing the technique in a Mott-insulating state of ultracold atomic fermions.
Main Results:
- Successfully demonstrated the activation of both one-axis twisting and two-axis countertwisting squeezing mechanisms.
- The proposed method is shown to be feasible with current experimental capabilities.
Conclusions:
- The study presents a viable method for generating crucial quantum states for future technologies.
- The findings pave the way for enhanced quantum metrology and advanced quantum information processing.
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