Issue
EPL
Volume 82, Number 3, May 2008
Article Number 30002
Number of page(s) 4
Section General
DOI http://dx.doi.org/10.1209/0295-5075/82/30002
Published online 18 April 2008
EPL, 82 (2008) 30002
DOI: 10.1209/0295-5075/82/30002

Optical realization of quantum gambling machine

P. Zhang, Y.-S. Zhang, Y.-F. Huang, L. Peng, C.-F. Li and G.-C. Guo

Key Laboratory of Quantum Information, University of Science and Technology of China, CAS Hefei 230026, PRC

yshzhang@ustc.edu.cn

received 18 January 2008; accepted in final form 10 March 2008; published May 2008
published online 18 April 2008

Abstract
Quantum gambling, a secure remote two-party protocol which has no classical counterpart, is demonstrated through optical approach. A photon is prepared by Alice in a superposition state of two potential paths. Then one path leads to Bob and is split into two parts. The security is confirmed by quantum interference between Alice's path and one part of Bob's path. A quantum gambling machine is demonstrated to be feasible by this way.

PACS
03.67.-a - Quantum information.
42.50.Xa - Optical tests of quantum theory.
42.79.Sz - Optical communication systems, multiplexers, and demultiplexers.

© EPLA 2008