Fast spin squeezing by distance-selective long-range interactions with Rydberg molecule dressing

Wu, Huaizhi; Lin, Xin Yu; Ding, Zong Xing; Zheng, Shi Biao; Lesanovsky, Igor; Li, Weibin

Abstract

We propose a Rydberg molecule dressing scheme to create strong and long-ranged interactions at selective distances. This is achieved through laser coupling ground-state atoms off-resonantly to an attractive molecular curve of two interacting Rydberg atoms. Although dephasing due to Rydberg state decay occurs in all dressing schemes, an advantage of the molecule dressing is that a large ratio of dressed interaction to dephasing rate can be realized at large atomic separations. In an optical lattice or tweezer setting, we show that the strong interaction permits the fast generation of spin squeezing for several tens of dressed atoms. The proposed setting offers a new route to study complex many-body dynamics and to realize quantum information processing with non-convex long-range interactions.

• Journal Article Type: Article
• Acceptance Date: Apr 14, 2022
• Online Publication Date: Jun 14, 2022
• Publication Date: Jun 14, 2022
• Deposit Date: Apr 30, 2022
• Publicly Available Date: Jun 15, 2023
• Journal: Science China: Physics, Mechanics and Astronomy
• Print ISSN: 1674-7348
• Electronic ISSN: 1869-1927
• Publisher: Springer Science and Business Media LLC
• Peer Reviewed: Peer Reviewed
• Volume: 65
• Issue: 8
• Article Number: 280311
• DOI: https://doi.org/10.1007/s11433-022-1910-0
• Keywords: General Physics and Astronomy
• Public URL: https://nottingham-repository.worktribe.com/output/7911662
• Publisher URL: https://link.springer.com/article/10.1007/s11433-022-1910-0
• Additional Information: This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/https://link.springer.com/article/10.1007/s11433-022-1910-0