Ultrafast many-body electron dynamics in a strongly-correlated ultracold Rydberg gas

报告人
Prof.Nobuyuki Takei
单位
日本分子科学研究所
时间
2017-10-19 (周四) 16:00
地点
理化大楼东附2003会议室(上海研究院同步视频)
摘要

Many-body correlations govern a variety of important quantum phenomena such as the emergence of superconductivity and magnetism in condensed matter. Understanding quantum many-body systems is thus one of the central goals of modern sciences. We have demonstrated a new approach towards this goal by generating a strongly-correlated ultracold Rydberg gas with a broadband picosecond pulsed-laser excitation of a disordered ensemble of Rb atoms in an optical dipole trap [1, 2]. The strong many-body correlations have been manifested in ultrafast electron dynamics observed by time-domain Ramsey interferometry with attosecond precision. Our approach will offer a versatile platform to observe and manipulate nonequilibrium dynamics of strongly-correlated quantum many-body systems on the ultrafast timescale.