学术报告（2025年12月25日14:00）：Quantum Sensing, Simulation and Memory with Cavity-Mediated Interactions

主持人：董建文 教授

报告简介：

Large ensembles of atoms coupled to resonators are powerful platforms for quantum sensing, simulation and networking. In this talk, I will first focus on a cavity-QED system with cold rubidium atoms coupled to an optical cavity. In this system, I will introduce various tools in which cavity-mediated interactions between matter waves can be utilized to enhance the capability of quantum sensing and simulations. These tools include an entanglement-enhanced matter-wave interferometer [1], a novel momentumexchange interactions in a Bragg atom interferometer that suppresses Doppler dephasing [2], the demonstration of the long-sought two-axis counter-twisting dynamics [3] and the realization of unique three and four-body interactions [4]. If time allows, I will introduce a different cavity-QED system with solid-state spins coupled to a microwave resonator. Enabled by a new rare-earth-doped crystal (171Yb3+:CaWO4) platform with exceptional spin properties [5], we demonstrated all-to-all spin-exchange interactions in a solid-state platform for the first time. With the emerging many-body energy gap, we realized an ondemand coherence-protected spin memory, paving the way for future long-lived microwave memories for superconducting qubits.

[1] G. P. Greve∗, C. Luo∗, B. Wu, J. K. Thompson, Nature, 610, 472 (2022)

[2] C. Luo, H. Zhang, V. P. W. Koh, J. D. Wilson, A. Chu, M. J. Holland, A. M. Rey, J. K.

Thompson, Science, 384 (6695), 551-556 (2024)

[3] C. Luo∗, H. Zhang∗, A. Chu, C. Maruko, A. M. Rey, J. K. Thompson, Nature Physics,

21, 916-923 (2025)

[4] C. Luo, H. Zhang, C. Maruko, E. Bohr, A. Chu, A. M. Rey, J. K. Thompson, Science,

390 (6776), 925-929 (2025)

[5] A. Tiranov, et al. arXiv:2504.01592 (2025).

报告人简介：

罗程祎，本科就读于中⼭⼤学（2013-2017 年），博⼠毕业于科罗拉多⼤学 Boulder 分校（2024年），现为加州理⼯学院 AWS quantum 博⼠后研究员。

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