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Quantum discord as a resource for quantum cryptography

Name: Quantum discord as a resource for quantum cryptography
Creator: Stefano Pirandola
Keywords: Quantum Physics, 0103 physical sciences, FOS: Physical sciences, Quantum Physics (quant-ph), 01 natural sciences, Article

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type , Preprint 07 Nov 2014Embargo end date: 01 Jan 2013Publisher:Springer Science and Business Media LLCJournal:Scientific Reports, volume 4 (eissn: 2045-2322,

Authors: Stefano Pirandola;

doi: 10.1038/srep06956 , 10.48550/arxiv.1309.2446

pmid: 25378231

pmc: PMC4223666

arXiv: http://arxiv.org/abs/1309.2446

Quantum discord as a resource for quantum cryptography

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Abstract

Quantum discord is the minimal bipartite resource which is needed for a secure quantum key distribution, being a cryptographic primitive equivalent to non-orthogonality. Its role becomes crucial in device-dependent quantum cryptography, where the presence of preparation and detection noise (inaccessible to all parties) may be so strong to prevent the distribution and distillation of entanglement. The necessity of entanglement is re-affirmed in the stronger scenario of device-independent quantum cryptography, where all sources of noise are ascribed to the eavesdropper.

7 pages. Improved version

Related Organizations

University of York
United Kingdom

Keywords

Quantum Physics, FOS: Physical sciences, Quantum Physics (quant-ph), Article

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	146
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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%