Loophole-Free Bell Test Based on Local Precertification of Photon's Presence
2012 (English)In: PHYSICAL REVIEW X, ISSN 2160-3308, Vol. 2, no 2, 021010- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2012. Vol. 2, no 2, 021010- p.
IdentifiersURN: urn:nbn:se:su:diva-82987DOI: 10.1103/PhysRevX.2.021010ISI: 000310513100001OAI: oai:DiVA.org:su-82987DiVA: diva2:575016