公开(公告)号：US11894159B2

公开(公告)日：2024-02-06

申请号：US16966014

申请日：2020-06-30

申请人： HEFEI NORMAL UNIVERSITY

发明人： Dachuang Li ,  Mingxin Dong ,  Kai Wang ,  Wei Song ,  Dongsheng Ding ,  Baosen Shi

IPC分类号： G02F1/11 ,  G21K1/00

CPC分类号： G21K1/006 ,  G02F1/11

摘要： A proportion adjustable single-photon beam splitter based on cold atom storage includes a two-dimensional magneto-optical trap for receiving a first optical signal to be split; and a coupling beam. The coupling beam is incident at a certain angle with the first optical signal to the two-dimensional magneto-optical trap. The storage time of the two-dimensional magneto-optical trap 1 can be adjusted by controlling the switching time of the coupling beam, and then adjusting a proportion of a photon number of a storage part and a photon number of a leakage part of the first optical signal. A splitting proportion may also be adjusted by controlling an optical depth of the alkali metal atomic group trapped in the two-dimensional magneto-optical trap.