Secure quantum communication using classical correlated channel

Dimitri Danulussi Alves Costa, N. G. de Almeida (Corresponding Author), C. J. Villas-Boas

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)4303–4311
Number of pages8
JournalQuantum Information Processing
Issue number10
Early online date20 Jul 2016
Publication statusPublished - Oct 2016
Externally publishedYes

Bibliographical note

We thank Grants #2012/02816-5, #2012/00176-9 and #2013/04162-5, São Paulo Research Foundation (FAPESP), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Instituto Nacional de Ciência e Tecnologia Informação Quântica (INCT-IQ) for the financial support. NGA thanks FAPEG for financial support.


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