Abstract

A fiber-based photon-pair source in the telecom C-band is suitable for quantum information science including quantum communications. Spontaneous four-wave mixing effects are known to create photon pairs that are slightly detuned from the pump wavelength only in the anomalous group-velocity-dispersion (GVD) regime. Here, we achieve high-quality photon-pair generation slightly detuned from the pump wavelength in the normal GVD regime through a dispersion shifted fiber, for the first time. The photon pairs in C-band exhibit strong temporal correlation with each other and excellent heralded anti-bunching property. This photon-pair generation scheme can be exploited as telecom-band quantum light sources for quantum information applications.

Highlights

  • Observation of photon-pair generation in the normal group-velocitydispersion regime with slight detuning from the pump wavelength

  • This photon-pair generation scheme can be exploited as telecom-band quantum light sources for quantum information applications

  • The fiber based photon-pair sources are able to be directly coupled to fiber systems with negligible coupling loss, but waveguide-to-fiber coupling efficiency of a periodically poled spontaneous parametric down-conversion (SPDC) crystal is reported about 50% [8]

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Summary

Introduction

Observation of photon-pair generation in the normal group-velocitydispersion regime with slight detuning from the pump wavelength. To cite this article: Kyungdeuk Park et al 2018 New J. We achieve high-quality photon-pair generation slightly attribution to the author(s) and the title of detuned from the pump wavelength in the normal GVD regime through a dispersion shifted fiber, for the work, journal citation the first time.

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