Phys. Rev. A 64, 024102 (2001) [4 pages]Maximum-likelihood estimation of quantum measurementReceived 15 January 2001; published 17 July 2001 Maximum-likelihood estimation is applied to the determination of an unknown quantum measurement. The calibrated measuring apparatus carries out measurements on many different quantum states and the positive operator-valued measure governing the measurement statistics is then inferred from the collected data via the maximum-likelihood principle. In contrast to the procedures based on linear inversion, our approach always provides a physically sensible result. We illustrate the method on the case of the Stern-Gerlach apparatus. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.64.024102
DOI:
10.1103/PhysRevA.64.024102
PACS:
03.65.Ta, 03.65.Wj
|
|
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.