报告题目：Quantum simulation and metrology with optical fiber cavities

报 告 人: Prof. Jakob Reichel

报告时间：2026年6月22日（周一） 10：00-12：00

报告地点：物理楼W105会议室

内容摘要：Strong coupling between photons and material qubits plays a key role in both quantum technologies and fundamental quantum mechanics experiments. Fiber Fabry–Perot microcavities achieve strongest coupling in the optical domain, reaching cooperativities C>100, and are now used with a wide range of quantum emitters ranging from ultracold atoms and ions to solid-state systems such as color centers in diamond, carbon nanotubes, and semiconductor quantum dots. Beyond qubit readout, coupling many-particle quantum systems to such cavities gives rise to nonlocal interactions and couples collective degrees of freedom to the outside world. These effects naturally produce multiparticle entanglement and open wide-ranging opportunities in AMO and solid-state quantum optics, which experiments are only starting to explore. This lecture will present recent examples, and discuss how advances in microcavity technology also enable ultranarrow optical filters and compact, mobile greenhouse-gas analyzers.

报告人简介：Jakob Reichel is a professor at Sorbonne Université and Ecole Normale Supérieure in Paris, and member of Laboratoire Kastler Brossel, where his group explores cavity-based quantum technologies with ultracold atoms. He also has an interest in compact atomic clocks, which he pursues in collaboration with the French metrology laboratory, LTE-SYRTE, and in miniaturized devices for AMO applications. He demonstrated the first atom trap on a microchip (now known as an atom chip) and invented a fiber Fabry-Perot microcavity (FFP) with laser-machined mirrors which has found applications in many atomic and solid-state cavity QED experiments and beyond. Jakob Reichel has been a co-founder of ColdQuanta Inc (now Infleqtion) in 2007 and more recently, Mirega SAS, a startup specializing in tunable fiber-optical filters and portable greenhouse gas analyzers.