Phys. Rev. Lett. 102, 020403 (2009) [4 pages]Quantum Nondemolition Measurements and State Preparation in Quantum Gases by Light DetectionReceived 9 May 2008; published 14 January 2009 We consider light scattering from ultracold quantum gas in optical lattices into a cavity. The measurement of photons leaking out of the cavity enables a quantum nondemolition access to various atomic variables. The time resolved light detection projects the motional state to various atom-number squeezed and macroscopic superposition states that strongly depend on the geometry. Modifications of the atomic and light properties at a single quantum trajectory are demonstrated. The quantum structure of final states can be revealed by further observations of the same sample. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.102.020403
DOI:
10.1103/PhysRevLett.102.020403
PACS:
03.75.Lm, 05.30.Jp, 42.50.−p
|
|
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.