Telecom C-Band Photon-Pair Generation using Standard SMF-28 Fiber

• URL: http://arxiv.org/abs/2012.12464v1
• Date: Wed, 23 Dec 2020 02:59:21 GMT
• Title: Telecom C-Band Photon-Pair Generation using Standard SMF-28 Fiber
• Authors: Kyungdeuk Park, Dongjin Lee, Robert W. Boyd, Heedeuk Shin
• Abstract summary: We present a method to create photon pairs that functions efficiently even the pump wavelength is much larger than the zero GVD wavelength of medium. The measured pair generation rate and coincidence-to-accidental ratios are comparable to those from a long dispersion-shifted fiber.
• Score: 3.364554138758565
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Photon-pair generation must satisfy both the energy conservation and phase-matching conditions with a specific pump wavelength and dispersion of nonlinear optical medium, but finding a photon-pair, which has a desired specific wavelength, generation medium is challenging. Here, we present a method to create photon pairs that functions efficiently even the pump wavelength is much larger than the zero GVD wavelength of medium. In this study, we employ short SMF-28 fibers having ~1310 nm zero GVD wavelength and C-band pump (1552.52 nm) to generate C-band photon pairs. The measured pair generation rate and coincidence-to-accidental ratios are comparable to those from a long dispersion-shifted fiber. Polarization-entangled states are prepared, and an S value of 2.659 +- 0.094 is achieved from Bell inequality measurements. Our results indicate that the use of a short SFWM medium yields adequate photon-pair generation rates regardless of its dispersion properties in almost any material at any pump wavelength.

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