Journal
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
Volume 15, Issue 6, Pages 1570-1580Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTQE.2009.2021147
Keywords
Cloning; continuous variables; error correction; Gaussian states; non-Gaussian attacks; quantum communication; security
Categories
Funding
- European Community under Marie Curie Fellowship [MOIF-CT-2006-039703]
- W. M. Keck Center for Extreme Quantum Information Theory (xQIT)
- EPSRC [EP/F005881/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F005881/1] Funding Source: researchfish
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We consider the problem of privacy in direct communications, showing how quantum mechanics can be useful to guarantee a certain level of confidentiality. In particular, we review a continuous variable approach recently proposed by us [Pirandola et al., Europhys. Lett., vol. 84, pp. 20013-1-20013-6, 2008]. Here, we analyze the degree of privacy of this technique against a broader class of attacks, which includes non-Gaussian eavesdropping.
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