Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Quantum key distribution in the Holevo limit
Autore:
Cabello, A;
Indirizzi:
Univ Sevilla, Dept Fis Aplicada 2, E-41012 Seville, Spain Univ Sevilla Seville Spain E-41012 is Aplicada 2, E-41012 Seville, Spain
Titolo Testata:
PHYSICAL REVIEW LETTERS
fascicolo: 26, volume: 85, anno: 2000,
parte:, 1
pagine: 5635 - 5638
SICI:
0031-9007(200012)85:26<5635:QKDITH>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
ORTHOGONAL STATES; BELL THEOREM; CRYPTOGRAPHY; TELEPORTATION; CANNOT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Cabello, A Univ Sevilla, Dept Fis Aplicada 2, E-41012 Seville, Spain Univ Sevilla Seville Spain E-41012 2, E-41012 Seville, Spain
Citazione:
A. Cabello, "Quantum key distribution in the Holevo limit", PHYS REV L, 85(26), 2000, pp. 5635-5638

Abstract

A theorem by Shannon and the Holevo theorem impose that the efficiency of any protocol for quantum kev distribution, E, defined as the number of secret (i.e., allowing eavesdropping detection) bits per transmitted bit plus qubit, is E less than or equal to 1. The problem addressed here is whether the limit E = 1 can be achieved. It is showed that it can be done by splitting the secret bits between several qubits and forcing Eve to have only a sequential access to the qubits, as proposed by Goldenberg and Vaidman. A protocol with E = 1 based on polarized photons and in which Bob's state discrimination can be implemented with linear optical elements is presented.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 18:32:36