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A Single Photon Source With Linear Optics and Squeezed States
Institute for Quantum Computing, Univ. of Waterloo, Canada.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Physical and Analytical Chemistry, Quantum Chemistry. (Quantum information theory)
Institute for Quantum Computing, Univ. of Waterloo, Canada.
2004 (English)Article in journal (Other academic) Submitted
Abstract [en]

Quantum information processing using photons has recently been stimulated by the suggestion to use linear optics, single photon sources and detectors. The recent work by Knill has also shown that errors in photon detectors leads to a high error rate threshold (around 29%). An important missing element are good single photon sources. In this paper we show how to make a single photon source using squeezed states, linear optics and conditional measurement. We use degenerate squeezed vacuum states, in contrast to the normal non-degenerate squeezed vacuum states used for single photon production. We show that we can get a photon with certainty when detectors click appropriately, the last event happening up to around 25% of the time. We also show the robustness of this method with respect to a variety of potential imperfections.

Place, publisher, year, edition, pages
2004.
National Category
Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
URN: urn:nbn:se:uu:diva-151422OAI: oai:DiVA.org:uu-151422DiVA: diva2:409845
Note

Additional addresses (M. Ericsson): Institute for Quantum Computing, Univ. of Waterloo, Canada; Centre for Quantum Computation, DAMTP, Univ. of Cambridge, UK

Available from: 2011-04-11 Created: 2011-04-11 Last updated: 2016-08-11Bibliographically approved

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quant-ph/0408194

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Ericsson, Marie

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