Phys. Rev. A 53, 3738–3742 (1996)Entropy of phase measurement: Quantum phase via quadrature measurementReceived 2 June 1995; published in the issue dated June 1996 The content of phase information of an arbitrary phase-sensitive measurement is evaluated using the maximum likelihood estimation. The phase distribution is characterized by the relative entropy—a nonlinear functional of input quantum state. As an explicit example, the multiple measurement of the quadrature operator is interpreted as quantum phase detection achieving the ultimate resolution predicted by the Fisher information. © 1996 The American Physical Society. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.53.3738
DOI:
10.1103/PhysRevA.53.3738
PACS:
03.65.Bz, 07.60.Ly
|
|
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.