Laser & Optoelectronics Progress, Volume. 62, Issue 15, 1527001(2025)
Measurement of Contact in Strongly Interacting Fermi Gases
Contact is a universal thermodynamic quantity crucial for studying short-range pairing correlations in strongly interacting Fermi gases. It serves as a vital bridge connecting the system's microscopic short-range physics with its macroscopic thermodynamic properties. In this study, we developed a novel two-photon Raman coupling technique for strongly interacting ultracold Fermi gases. This method can switch the interaction to a non-interacting state on timescales much faster than the system's Fermi time, enabling instantaneous measurement of thermodynamic parameters. Our measurements reveal that in the high-momentum region, the atomic gas momentum distribution exhibits a
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Xin Bao, Shuxian Yu, Zhijie Zhang, Shujin Deng, Haibin Wu. Measurement of Contact in Strongly Interacting Fermi Gases[J]. Laser & Optoelectronics Progress, 2025, 62(15): 1527001
Category: Quantum Optics
Received: Apr. 7, 2025
Accepted: May. 21, 2025
Published Online: Aug. 11, 2025
The Author Email: Shujin Deng (sjdeng@lps.ecnu.edu.cn)
CSTR:32186.14.LOP250942