QUANTUM CRYPTOGRAPHY BASED ON SPLIT TRANSMISSION OF ONE-BIT INFORMATION IN 2 STEPS

Authors
Citation
M. Koashi et N. Imoto, QUANTUM CRYPTOGRAPHY BASED ON SPLIT TRANSMISSION OF ONE-BIT INFORMATION IN 2 STEPS, Physical review letters, 79(12), 1997, pp. 2383-2386
Citations number
19
Categorie Soggetti
Physics
Journal title
ISSN journal
00319007
Volume
79
Issue
12
Year of publication
1997
Pages
2383 - 2386
Database
ISI
SICI code
0031-9007(1997)79:12<2383:QCBOST>2.0.ZU;2-2
Abstract
We propose a simple quantum cryptographic scheme involving truly two o rthogonal states. The security of the protocol is based on splitting t he transfer of one-bit information into two steps, ensuring that only a fraction of the bit information is transmitted at a time. A particul ar implementation with an asymmetric interferometer is presented, whic h does not require the random timing of the packet sending as was used by Goldenberg and Vaidman [Phys. Rev. Lett. 75, 1239 (1995)].