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Proceedings Paper

Indistinguishability of 852 nm single-photon source based on a single cesium atom trapped in a magic wavelength optical tweezer (Conference Presentation)
Author(s): Junmin Wang; Bei Liu; Rui Sun; Jiachao Wang; Xin Wang; Gang Jin; Jun He

Paper Abstract

Atoms trapped in magic-wavelength optical tweezer will have the same light shift for the desired ground and excited states. In this case the position-dependence differential light shift of the desired transition can be eliminated. For cesium 6S_1/2 (Fg = 4, mF = +4) - 6P_3/2 (Fe = 5, mF = +5) cycling transition (852 nm), the magic wavelength was calculated theoretically for a linearly-polarized optical tweezer, and also it was verified experimentally to be 937.6 nm. We have demonstrated 852-nm triggered single-photon sources based on single cesium atom trapped in linearly-polarized optical tweezers implemented by using of 1064-nm and 937.6-nm lasers, respectively. The photon statistics were characterized by using of the Hanbury Brown - Twiss (HBT) scheme based on Si single-photon detectors (SSPDs). Strong anti-bunching effect [g^2(t=0) = 0.09] was recognized, and it shown perfectly the single-photon characters. The Hong-Ou-Mandel (HOM) two-photon interference measurements based on SSPDs were employed to evaluate the photon indistinguishability. Our preliminary experimental results indicated that the indistinguishability of single photons has been improved ~ 20% for the case of magic-wavelength optical tweezer. References: [1] Phys. Rev. A 94 (2016) 013409; [2] Appl. Phys. Express 9 (2016) 072702; [3] Opt. Express 25 (2017) p.15861

Paper Details

Date Published: 13 May 2019
Proc. SPIE 11027, Quantum Optics and Photon Counting 2019, 110270I (13 May 2019); doi: 10.1117/12.2520710
Show Author Affiliations
Junmin Wang, Shanxi Univ. (China)
Bei Liu, Shanxi Univ. (China)
Rui Sun, Shanxi Univ. (China)
Jiachao Wang, Shanxi Univ. (China)
Xin Wang, Shanxi Univ. (China)
Gang Jin, Shanxi Univ. (China)
Jun He, Shanxi Univ. (China)

Published in SPIE Proceedings Vol. 11027:
Quantum Optics and Photon Counting 2019
Ivan Prochazka; Roman Sobolewski; Ralph B. James; Peter Domokos; Adam Gali, Editor(s)

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