| Full text | |
| 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: | 12/02816-5 - Simulation of quantum communication protocols using faked states |
| Grantee: | Dimitri Danulussi Alves Costa |
| Support Opportunities: | 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 Opportunities: | Regular Research Grants |
| FAPESP's process: | 13/04162-5 - Development of quantum sensors based on ultracold atoms |
| Grantee: | Philippe Wilhelm Courteille |
| Support Opportunities: | Research Projects - Thematic Grants |