Indistinguishability of 852 nm single-photon source based on a single cesium atom trapped in a magic wavelength optical tweezer (Conference Presentation)

Junmin Wang; Bei Liu; Rui Sun; Jiachao Wang; Xin Wang; Gang Jin; Jun He

doi:10.1117/12.2520710

13 May 2019 Indistinguishability of 852 nm single-photon source based on a single cesium atom trapped in a magic wavelength optical tweezer (Conference Presentation)

Junmin Wang, Bei Liu, Rui Sun, Jiachao Wang, Xin Wang, Gang Jin, Jun He

Author Affiliations +

Proceedings Volume 11027, Quantum Optics and Photon Counting 2019; 110270I (2019) https://doi.org/10.1117/12.2520710
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic

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

Conference Presentation

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Junmin Wang, Bei Liu, Rui Sun, Jiachao Wang, Xin Wang, Gang Jin, and Jun He "Indistinguishability of 852 nm single-photon source based on a single cesium atom trapped in a magic wavelength optical tweezer (Conference Presentation)", Proc. SPIE 11027, Quantum Optics and Photon Counting 2019, 110270I (13 May 2019); https://doi.org/10.1117/12.2520710

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KEYWORDS

Optical tweezers

Cesium

Chemical species

Iron

Silicon

Single photon

Single photon detectors

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