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Single-photon device requirements for operating linear optics quantum computing outside the post-selection basis

Abstract : Photonics is a promising architecture for the realisation of quantum information processing, since the two-photon interaction, or non-linearity, necessary to build logical gates can efficiently be realised by the use of interference with ancillary photons and detection. Although single-photon sources and detectors are pivotal in realisations of such systems, clear guidelines for the required performance of realistic systems are yet to be defined. We present our detailed numerical simulation of several quantum optics circuits including sources and detectors all represented in multi-dimensional Fock-spaces, which allows us to obtain experimentally realistic performance bounds for these devices. In addition, the single-photon source based on switched parametric downconversion is studied, which in principle could reach the required performance. Three approaches for implementing the switching hierarchy of the photons are simulated, and their anticipated performance is obtained. Our results define the bar for the optical
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https://hal-iogs.archives-ouvertes.fr/hal-00623085
Contributor : Marco Barbieri <>
Submitted on : Tuesday, September 13, 2011 - 3:16:58 PM
Last modification on : Wednesday, September 16, 2020 - 5:38:33 PM

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  • HAL Id : hal-00623085, version 1

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Thomas Jennewein, Marco Barbieri, Andrew G. White. Single-photon device requirements for operating linear optics quantum computing outside the post-selection basis. Journal of Modern Optics, Taylor & Francis, 2011, 58 (3-4), pp.276-287. ⟨hal-00623085⟩

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