Production of heralded pure single photons from imperfect sources using cross-phase-modulation

Thomas Konrad; Michael Nock; Artur Scherer; Jürgen Audretsch

doi:10.1103/PhysRevA.74.032331

Production of heralded pure single photons from imperfect sources using cross-phase-modulation

Thomas Konrad^*, Michael Nock, Artur Scherer, Jürgen Audretsch

^*Corresponding author for this work

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

6 Citations (Scopus)

Abstract

Realistic single-photon sources do not generate single photons with certainty. Instead they produce statistical mixtures of photons in Fock states 1 and vacuum (noise). We describe how to eliminate the noise in the output of the sources by means of another noisy source or a coherent state and cross-phase-modulation (XPM). We present a scheme that announces the production of pure single photons and thus eliminates the vacuum contribution. This is done by verifying a XPM-related phase shift with a Mach-Zehnder interferometer.

Original language	English
Article number	032331
Pages (from-to)	1-8
Number of pages	8
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	74
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevA.74.032331
Publication status	Published - 2006
Externally published	Yes

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10.1103/PhysRevA.74.032331

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AB - Realistic single-photon sources do not generate single photons with certainty. Instead they produce statistical mixtures of photons in Fock states 1 and vacuum (noise). We describe how to eliminate the noise in the output of the sources by means of another noisy source or a coherent state and cross-phase-modulation (XPM). We present a scheme that announces the production of pure single photons and thus eliminates the vacuum contribution. This is done by verifying a XPM-related phase shift with a Mach-Zehnder interferometer.

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Production of heralded pure single photons from imperfect sources using cross-phase-modulation

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