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Entanglement in optical parametric down-conversion with losses and noise
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SYSNO ASEP 0337295 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Entanglement in optical parametric down-conversion with losses and noise Title Provázanost v optické sestupné konverzi se ztrátami a šumem Author(s) Peřina st., Jan (FZU-D)
Křepelka, Jaromír (FZU-D)Source Title Optics Communications. - : Elsevier - ISSN 0030-4018
Roč. 282, č. 19 (2009), 3918-3923Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords quantum measurement ; parametric down-conversion ; nonclassical light Subject RIV BH - Optics, Masers, Lasers R&D Projects 1M06002 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) IAA100100713 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10100522 - FZU-D (2005-2011) UT WOS 000269766400016 DOI 10.1016/j.optcom.2009.06.032 Annotation We show that radiation generated in optical parametric down-conversion with losses and noise is entangled for all times if the coupling coefficient is higher than half of damping constant and the product of damping constant and mean number of noise photons. For the process stimulated by means of chaotic light there is a saturable bound of its intensity for the generation of nonclassical light. Otherwise the quantum behaviour and entanglement are fully reduced. Under some restrictions for noise nonclassical light can also be generated at and below the threshold. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2010
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