报告题目：Bose-Einstein condensates of Atoms and Photons - A comprehensive Overview
报 告 人：Prof. Axel Pelster (Department of Physics, University of Kaiserslautern, Germany)
报告时间：2017年10月9日（周一）10:00
报告地点：校本部G309
邀请人：姜颖
报告摘要：
A Bose-Einstein condensate (BEC) represents a state of matter of a gas of bosons, which has a density of a millonth of air and is cooled to temperatues very close to absolute zero. Under such extreme conditions, a large fraction of bosons occupy the lowest quantum state which gives rise to a plethora of macroscopic quantum phenomena as, for instance, superfluidity. Whereas a Bose-Einstein condensate of massive bosons has been realized with a gas of alkali atoms in a magneto-optical trap already in 1995, massless photons could only be Bose-Einstein condensed in 2010 within a dye-filled microcavity in 2010. The talk provides a comprehensive overview about the similarities and the differences of these exciting experiments and the current status of their theoretical description. Furthermore, motivated by Feynman’s conjecture of the quantum simulator, we review the current quest for realizing both atoms and photons in period structures as optical lattices or microcavity lattices.
