Optomechanical self-organization in a mesoscopic atom array

• URL: http://arxiv.org/abs/2410.12754v1
• Date: Wed, 16 Oct 2024 17:18:15 GMT
• Title: Optomechanical self-organization in a mesoscopic atom array
• Authors: Jacquelyn Ho, Yue-Hui Lu, Tai Xiang, Cosimo C. Rusconi, Stuart J. Masson, Ana Asenjo-Garcia, Zhenjie Yan, Dan M. Stamper-Kurn,
• Abstract summary: We study mesoscopic signatures of a spatial self-organization phase transition in deterministically prepared arrays of between 10 and 22 atoms inside an optical cavity. Through precise engineering of the atom-cavity interactions, we reveal how critical behavior depends on atom number. This work opens the door to probing particle-number- and time-resolved properties of phase transitions in mesoscopic systems.
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• Abstract: A fundamental challenge in modern physics is bridging the gap between an exact description of few-body microscopic systems and the emergent description of many-body macroscopic systems. This gap may be bridged by tracing the properties of well-controlled intermediate-size mesoscopic systems. Here, we study mesoscopic signatures of a spatial self-organization phase transition in deterministically prepared arrays of between 10 and 22 atoms inside an optical cavity. Through precise engineering of the atom-cavity interactions, we reveal how critical behavior depends on atom number. We identify characteristic dynamical behaviors related to symmetry breaking and system size in the self-organized regime, and observe a finite optomechanical susceptibility at the critical point. This work opens the door to probing particle-number- and time-resolved properties of phase transitions in mesoscopic systems.

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