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Polarization-independent single-photon switch based on a fiber-optical Sagnac interferometer for quantum communication networks
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- Alarcon, Alvaro, 1991- (author)
- Linköpings universitet,Informationskodning,Tekniska fakulteten,Univ Concepcion, Chile
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- Gonzalez, P. (author)
- Univ Concepcion, Chile
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- Carine, J. (author)
- Univ Concepcion, Chile; Univ Catolica Santisima, Chile
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- OPTICAL SOC AMER, 2020
- 2020
- English.
- In: Optics Express. - : OPTICAL SOC AMER. - 1094-4087. ; 28:22, s. 33731-33738
- Journal article (peer-reviewed)
Abstract
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- An essential component of future quantum networks is an optical switch capable of dynamically routing single photons. Here we implement such a switch, based on a fiber-optical Sagnac interferometer design. The routing is implemented with a pair of fast electro-optical telecom phase modulators placed inside the Sagnac loop, such that each modulator acts on an orthogonal polarization component of the single photons, in order to yield polarization-independent capability that is crucial for several applications. We obtain an average extinction ratio of more than 19 dB between both outputs of the switch. Our experiment is built exclusively with commercial off-the-shelf components, thus allowing direct compatibility with current optical communication systems. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
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- ref (subject category)
- art (subject category)
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