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.

Loophole-Free Bell Test Based on Local Precertification of Photon’s Presence / Adán, Cabello; Sciarrino, Fabio. - In: PHYSICAL REVIEW. X. - ISSN 2160-3308. - 2:2(2012), p. 021010. [10.1103/physrevx.2.021010]

Loophole-Free Bell Test Based on Local Precertification of Photon’s Presence

SCIARRINO, Fabio
2012

Abstract

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.
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Loophole-Free Bell Test Based on Local Precertification of Photon’s Presence / Adán, Cabello; Sciarrino, Fabio. - In: PHYSICAL REVIEW. X. - ISSN 2160-3308. - 2:2(2012), p. 021010. [10.1103/physrevx.2.021010]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/449917
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