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Postselection-Looph...
Postselection-Loophole-Free Bell Test Over an Installed Optical Fiber Network
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- Carvacho, Gonzalo (author)
- University of Concepcion, Chile; University of Concepcion, Chile; University of Concepcion, Chile
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- Carine, Jaime (author)
- University of Concepcion, Chile; University of Concepcion, Chile; University of Concepcion, Chile
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- Saavedra, Gabriel (author)
- University of Concepcion, Chile; University of Concepcion, Chile; University of Concepcion, Chile
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- Cuevas, Alvaro (author)
- University of Concepcion, Chile; University of Concepcion, Chile; University of Concepcion, Chile
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- Fuenzalida, Jorge (author)
- University of Concepcion, Chile; University of Concepcion, Chile; University of Concepcion, Chile
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- Toledo, Felipe (author)
- University of Concepcion, Chile; University of Concepcion, Chile; University of Concepcion, Chile
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- Figueroa, Miguel (author)
- University of Concepcion, Chile; University of Concepcion, Chile
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- Cabello, Adan (author)
- University of Seville, Spain
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- Larsson, Jan-Åke (author)
- Linköpings universitet,Informationskodning,Tekniska fakulteten
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- Mataloni, Paolo (author)
- University of Roma La Sapienza, Italy
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- Lima, Gustavo (author)
- University of Concepcion, Chile; University of Concepcion, Chile; University of Concepcion, Chile
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- Xavier, Guilherme B. (author)
- University of Concepcion, Chile; University of Concepcion, Chile; University of Concepcion, Chile
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(creator_code:org_t)
- American Physical Society, 2015
- 2015
- English.
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In: Physical Review Letters. - : American Physical Society. - 0031-9007 .- 1079-7114. ; 115:3, s. 030503-
- Related links:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Device-independent quantum communication will require a loophole-free violation of Bell inequalities. In typical scenarios where line of sight between the communicating parties is not available, it is convenient to use energy-time entangled photons due to intrinsic robustness while propagating over optical fibers. Here we show an energy-time Clauser-Horne-Shimony-Holt Bell inequality violation with two parties separated by 3.7 km over the deployed optical fiber network belonging to the University of Concepcion in Chile. Remarkably, this is the first Bell violation with spatially separated parties that is free of the postselection loophole, which affected all previous in-field long-distance energy-time experiments. Our work takes a further step towards a fiber-based loophole-free Bell test, which is highly desired for secure quantum communication due to the widespread existing telecommunication infrastructure.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Carvacho, Gonzal ...
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Carine, Jaime
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Saavedra, Gabrie ...
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Cuevas, Alvaro
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Fuenzalida, Jorg ...
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Toledo, Felipe
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show more...
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Figueroa, Miguel
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Cabello, Adan
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Larsson, Jan-Åke
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Mataloni, Paolo
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Lima, Gustavo
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Xavier, Guilherm ...
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- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Electrical Engin ...
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Physical Review ...
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Linköping University