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No-Signaling Principle Can Determine Optimal Quantum State Discrimination.

No-Signaling Principle Can Determine Optimal Quantum State Discrimination.

Authors :
Joonwoo Bae
Won-Young Hwang
Yeong-Deok Han
Source :
Physical Review Letters. 10/21/2011, Vol. 107 Issue 17, p170403-1-170403-4. 4p.
Publication Year :
2011

Abstract

We provide a general framework of utilizing the no-signaling principle in derivation of the guessing probability in the minimum-error quantum state discrimination. We show that, remarkably, the guessing probability can be determined by the no-signaling principle. This is shown by proving that, in the semidefinite programing for the discrimination, the optimality condition corresponds to the constraint that quantum theory cannot be used for a superluminal communication. Finally, a general bound to the guessing probability is presented in a closed form. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00319007
Volume :
107
Issue :
17
Database :
Academic Search Index
Journal :
Physical Review Letters
Publication Type :
Academic Journal
Accession number :
70308006
Full Text :
https://doi.org/10.1103/physrevlett.107.170403