Rydberg-dressed atoms in BCS-state

2016/06/06 by T. Espinosa-Ortega, Espinosa-Ortega, T., I. A. Shelykh +1
Mathematics · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #Quantum Gases (cond-mat.quant-gas) #Stochastic processes and statistical mechanics #Theoretical and Computational Physics #cond-mat.quant-gas

paper · pdf · doi:10.48550/arxiv.1606.01664

Didn't publish, is unfinished

openalex publication_date 2016/06/06 · arxiv created 2022/03/09 · arxiv updated 2022/03/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider a system consisting of Rydberg dressed atoms interacting with BEC condensate of diatomic molecules. Using random phase approximation (RPA) we calculate the effective interactions between Rydberg atoms accounting for their Wan der Waals repulsion and exchange of virtual excitations of the condensate and demonstrate that total interaction can become attractive and BCS state of Rydberg dressed atoms can be formed. Using the example of 6Li atoms we demonstrate that the strength of the interactions can be controlled optically, and BCS regime is achievable at realistic experimental conditions.

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