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arXiv · 0709.3129

Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber

K. Garay-Palmett·H. J. McGuinness·Offir Cohen·J. S. Lundeen·R. Rangel-Rojo·A. B. U'Ren·M. G. Raymer·C. J. McKinstrie·S. Radic·I. A. Walmsley
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Abstract

We study theoretically the generation of photon pairs by spontaneous four-wave mixing (SFWM) in photonic crystal optical fiber. We show that it is possible to engineer two-photon states with specific spectral correlation (``entanglement'') properties suitable for quantum information processing applications. We focus on the case exhibiting no spectral correlations in the two-photon component of the state, which we call factorability, and which allows heralding of single-photon pure-state wave packets without the need for spectral post filtering. We show that spontaneous four wave mixing exhibits a remarkable flexibility, permitting a wider class of two-photon states, including ultra-broadband, highly-anticorrelated states.

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K. Garay-Palmett, H. J. McGuinness, Offir Cohen, J. S. Lundeen, R. Rangel-Rojo, A. B. U'Ren, M. G. Raymer, C. J. McKinstrie, S. Radic, I. A. Walmsley. 2007-09-20. Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber. https://doi.org/10.1364/oe.15.014870

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