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Loophole-Free Bell Test Based on Local Precertification of Photon's Presence
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum.
2012 (engelsk)Inngår i: PHYSICAL REVIEW X, ISSN 2160-3308, Vol. 2, nr 2, s. 021010-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A loophole-free violation of Bell inequalities is of fundamental importance for demonstrating quantum nonlocality and long-distance device-independent secure communication. However, transmission losses represent a fundamental limitation for photonic loophole-free Bell tests. A local precertification of the presence of the photons immediately before the local measurements may solve this problem. We show that local precertification is feasible by integrating three current technologies: (i) enhanced single-photon down-conversion to locally create a flag photon, (ii) nanowire-based superconducting single-photon detectors for a fast flag detection, and (iii) superconducting transition-edge sensors to close the detection loophole. We carry out a precise space-time analysis of the proposed scheme, showing its viability and feasibility.

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2012. Vol. 2, nr 2, s. 021010-
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URN: urn:nbn:se:su:diva-82987DOI: 10.1103/PhysRevX.2.021010ISI: 000310513100001OAI: oai:DiVA.org:su-82987DiVA, id: diva2:575016
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AuthorCount:2;

Tilgjengelig fra: 2012-12-07 Laget: 2012-12-03 Sist oppdatert: 2012-12-07bibliografisk kontrollert

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