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

Jennewein, Thomas, Barbieri, Marco and White, Andrew G. (2011) Single-photon device requirements for operating linear optics quantum computing outside the post-selection basis. Journal of Modern Optics, 58 3-4: 1-12. doi:10.1080/09500340.2010.546894


Author Jennewein, Thomas
Barbieri, Marco
White, Andrew G.
Title Single-photon device requirements for operating linear optics quantum computing outside the post-selection basis
Journal name Journal of Modern Optics   Check publisher's open access policy
ISSN 1362-3044
0950-0340
Publication date 2011
Sub-type Article (original research)
DOI 10.1080/09500340.2010.546894
Volume 58
Issue 3-4
Start page 1
End page 12
Total pages 12
Place of publication Essex, United Kingdom
Publisher Taylor & Francis
Collection year 2012
Language eng
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 [1]. 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 devices needed to achieve the first level of linear-optics quantum computing outside the coincidence basis.
Keyword Linear optical quantum computing (LOQC)
Photon sources
Single-photon detectors
Quantum optics
Quantum entanglement
Numerical simulation of quantum optics
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Special Issue: Single-Photon Technologies. Selected Papers from the 4th International Workshop on Single and Entangled Photons: Sources, Detectors, Components, and Applications, 3–6 November 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Centre for Quantum Computer Technology Publications
Official 2012 Collection
 
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Created: Tue, 08 Feb 2011, 09:48:17 EST by Professor Andrew White on behalf of Physics