US 11,894,159 B2
Proportion adjustable single-photon beam splitter based on cold atom storage
Dachuang Li, Hefei (CN); Mingxin Dong, Hefei (CN); Kai Wang, Hefei (CN); Wei Song, Hefei (CN); Dongsheng Ding, Hefei (CN); and Baosen Shi, Hefei (CN)
Assigned to HEFEI NORMAL UNIVERSITY, Hefei (CN)
Appl. No. 16/966,014
Filed by HEFEI NORMAL UNIVERSITY, Hefei (CN)
PCT Filed Jun. 30, 2020, PCT No. PCT/CN2020/099079
§ 371(c)(1), (2) Date Jul. 30, 2020,
PCT Pub. No. WO2022/000221, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 202010597307.X (CN), filed on Jun. 28, 2020.
Prior Publication US 2023/0154638 A1, May 18, 2023
Int. Cl. G02F 1/11 (2006.01); G21K 1/00 (2006.01)
CPC G21K 1/006 (2013.01) [G02F 1/11 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A proportion adjustable single-photon beam splitter based on cold atom storage comprising:
a two-dimensional magneto-optical trap for receiving a first optical signal to be split; and
a coupling beam incident to the two-dimensional magneto-optical trap; and
wherein an alkali metal atomic group is trapped in the two-dimensional magneto-optical trap; and
wherein a splitting proportion is adjusted by controlling an optical depth of the alkali metal atomic group.