演讲人： 肖艳红 [复旦大学]
时间： 16:30-18:00, Sep 11, 2025 (Thu)
地点： RM 1-222, FIT Building
内容：
Physical systems based on coherent atom-light interactions are important for precision measurements and sensing. The measurement sensitivities of classical systems are fundamentally limited by spin projection noise and photon shot noise, hence employing quantum entanglement and squeezed states to break such limits is of great interests and at the frontier of quantum metrology. Ultimately, precision measurement becomes equivalent to a problem of quantum information processing, i.e., how to efficiently encode and decode the unknown signal in the quantum states of atoms and light. In this talk, I will describe recent efforts in our group to control quantum information and to extend the measurement capabilities of practical quantum systems containing one hundred billion atoms, including continuous quantum-enhanced sensing with steady-state spin squeezing and machine learning, bypassing the Heisenberg uncertainty principle, entangling qudit atoms with internal spin squeezing, and concurrent light squeezing and spin squeezing. I will also report novel quantum light sources made from an atom ensemble, such as a synchronized squeezed light array and a quantum-correlated light array, which has potential impacts in quantum sensing, imaging and quantum networks. These techniques, although demonstrated in room-temperature atomic vapor, are broadly applicable to many other systems such as solid-state spins, trapped ions, cold atoms and optomechanics.
个人简介:
肖艳红，复旦大学物理学系教授。美国物理学会会士。1998年、2000年清华大学学士、硕士；2004年美国哈佛大学博士；2005-2009年哈佛-史密斯天文物理中心原子分子部博士后。2009年底加入复旦大学。研究方向是量测量基础，原子纠缠态，量子增强的传感，量子光学，光量子模拟，量子光源，原子磁力计等。
