Ultra stable all-fiber telecom-band entangled photon-pair source for turnkey quantum communication applications

Chuang Liang; Kim Fook Lee; Todd Levin; Jun Chen; Prem Kumar

doi:10.1364/OE.14.006936

Ultra stable all-fiber telecom-band entangled photon-pair source for turnkey quantum communication applications

Chuang Liang^*, Kim Fook Lee, Todd Levin, Jun Chen, Prem Kumar

^*Corresponding author for this work

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

We demonstrate a novel alignment-free all-fiber source for generating telecom-band polarization-entangled photon pairs. Polarization entanglement is created by injecting two relatively delayed, orthogonally polarized pump pulses into a piece of dispersion-shifted fiber, where each one independently engages in four-photon scattering, and then removing any distinguishability between the correlated photon-pairs produced by each pulse at the fiber output. Our scheme uses a Michelson-interferometer configuration with Faraday mirrors to achieve practically desirable features such as ultra-stable performance and turnkey operation. Up to 91.7% two-photon-interference visibility is observed without subtracting the accidental coincidences that arise from background photons while operating the source at room temperature.

Original language	English (US)
Pages (from-to)	6936-6941
Number of pages	6
Journal	Optics Express
Volume	14
Issue number	15
DOIs	https://doi.org/10.1364/OE.14.006936
State	Published - 2006

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Ultra stable all-fiber telecom-band entangled photon-pair source for turnkey quantum communication applications",

abstract = "We demonstrate a novel alignment-free all-fiber source for generating telecom-band polarization-entangled photon pairs. Polarization entanglement is created by injecting two relatively delayed, orthogonally polarized pump pulses into a piece of dispersion-shifted fiber, where each one independently engages in four-photon scattering, and then removing any distinguishability between the correlated photon-pairs produced by each pulse at the fiber output. Our scheme uses a Michelson-interferometer configuration with Faraday mirrors to achieve practically desirable features such as ultra-stable performance and turnkey operation. Up to 91.7% two-photon-interference visibility is observed without subtracting the accidental coincidences that arise from background photons while operating the source at room temperature.",

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AU - Kumar, Prem

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