时间：3月26日16:15
地点：近代物理系309会议室
报告人：华中科技大学 吕新友教授
报告题目：single-photon-triggered quantum phase transition
报告摘要：we propose a hybrid quantum model combining cavity qed and optomechanics, which allows the occurrence of equilibrium superradiant quantum phase transition (qpt) and triggered by a single photon. this single-photon-triggered qpt exists both in the cases of ignoring and including the so-called a2 term, i.e., it is immune to the no-go theorem. it originally comes from the photon dependent quantum criticality featured by the proposed hybrid quantum model. moreover, a reversed superradiant qpt is induced by the competition between the introduced a2 term and the optomechanical interaction. this work offers an approach to manipulate qpt with a single photon, which should inspire the exploration of single-photon quantum-criticality physics and the engineering of new single-photon quantum devices.
