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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

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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.

Physical Review Letters

|September 9, 2022

Summary

This summary is machine-generated.

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.

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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.