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Conditional evolution in single-atom cavity QED | | Andrei N. Soklakov
; Ruediger Schack
; | | Date: |
26 Apr 2001 | | Journal: | Phys. Rev. A 65, 013804 (2002) | | Subject: | quant-ph | | Affiliation: | Royal Holloway, University of London | | Abstract: | We consider a typical setup of cavity QED consisting of a two-level atom interacting strongly with a single resonant electromagnetic field mode inside a cavity. The cavity is resonantly driven and the output undergoes continuous homodyne measurements. We derive an explicit expression for the state of the system conditional on a discrete photocount record. This expression takes a particularly simple form if the system is initially in the steady state. As a byproduct, we derive a general formula for the steady state that had been conjectured before in the strong driving limit. | | Source: | arXiv, quant-ph/0104128 | | Services: | Forum | Review | PDF | Favorites | |
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