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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Secure quantum communication using classical correlated channel

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Author(s):
Costa, D. ; de Almeida, N. G. ; Villas-Boas, C. J.
Total Authors: 3
Document type: Journal article
Source: QUANTUM INFORMATION PROCESSING; v. 15, n. 10, p. 4303-4311, OCT 2016.
Web of Science Citations: 6
Abstract

We propose a secure protocol to send quantum information from one part to another without a quantum channel. In our protocol, which resembles quantum teleportation, a sender (Alice) and a receiver (Bob) share classical correlated states instead of EPR ones, with Alice performing measurements in two different bases and then communicating her results to Bob through a classical channel. Our secure quantum communication protocol requires the same amount of classical bits as the standard quantum teleportation protocol. In our scheme, as in the usual quantum teleportation protocol, once the classical channel is established in a secure way, a spy (Eve) will never be able to recover the information of the unknown quantum state, even if she is aware of Alice's measurement results. Security, advantages, and limitations of our protocol are discussed and compared with the standard quantum teleportation protocol. (AU)

FAPESP's process: 13/04162-5 - Development of quantum sensors based on ultracold atoms
Grantee:Philippe Wilhelm Courteille
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/02816-5 - Simulation of quantum communication protocols using faked states
Grantee:Dimitri Danulussi Alves Costa
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 12/00176-9 - Dynamics of open quantum systems: quantum-classical transition and electromagnetically induced transparency in optical cavities
Grantee:Celso Jorge Villas-Bôas
Support type: Regular Research Grants