Two-photon beating experiment using biphotons generated from a two-level system

Jianming Wen, Shengwang Du, Morton H. Rubin, and Eun Oh
Phys. Rev. A 78, 033801 – Published 3 September 2008

Abstract

We propose a two-photon beating experiment based upon biphotons generated from a resonant pumping two-level system operating in a backward geometry. On the one hand, the linear optical-response leads biphotons produced from two sidebands in the Mollow triplet to propagate with tunable refractive indices, while the central-component propagates with unity refractive index. The relative phase difference due to different refractive indices is analogous to the pathway-length difference between long-long and short-short pathways in the original Franson interferometer. By subtracting the linear Rayleigh scattering of the pump, the visibility in the center part of the two-photon beating interference can be ideally manipulated among [0, 100%] by varying the pump power, the material length, and the atomic density, which indicates a Bell-type inequality violation. On the other hand, the proposed experiment may be an interesting way of probing the quantum nature of the detection process. The interference will disappear when the separation of the Mollow peaks approaches the fundamental time scales for photon absorption in the detector.

  • Figure
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  • Received 3 June 2008

DOI:https://doi.org/10.1103/PhysRevA.78.033801

©2008 American Physical Society

Authors & Affiliations

Jianming Wen1,*, Shengwang Du2, Morton H. Rubin1, and Eun Oh3,4

  • 1Physics Department, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA
  • 2Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
  • 3Remote Sensing Division, U.S. Naval Research Laboratory, Washington, D.C. 20375, USA
  • 4Physics Department, University of Virginia, Charlottesville, Virginia 22904, USA

  • *jianm1@umbc.edu

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Vol. 78, Iss. 3 — September 2008

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