Phys. Rev. A 80, 012112 (2009) [6 pages]Weak values and the quantum phase spaceReceived 27 March 2009; published 23 July 2009 We address the issue of how to properly treat, and in a more general setting, the concept of a weak value of a weak measurement in quantum mechanics. We show that for this purpose, one must take in account the effects of the measuring process on the entire phase space of the measuring system. By using coherent states, we go a step further than Jozsa in a recent paper and we present an example where the result of the measurement is symmetrical in the position and momentum observables and seems to be much better suited for quantum optical implementation. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.80.012112
DOI:
10.1103/PhysRevA.80.012112
PACS:
03.65.Ta, 03.67.−a
|
|
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.