Phys. Rev. A 71, 062340 (2005) [4 pages]Optimal discrimination of quantum operationsReceived 25 January 2005; published 30 June 2005 We address the problem of discriminating with minimal error probability two given quantum operations. We show that the use of entangled input states generally improves the discrimination. For Pauli channels we provide a complete comparison of the optimal strategies where either entangled or unentangled input states are used. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.71.062340
DOI:
10.1103/PhysRevA.71.062340
PACS:
03.67.Hk, 03.65.Ta
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.