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Quantum trajectories for realistic detection

Warszawski, P. and Wiseman, H. M. and Mabuchi, H. (2002) Quantum trajectories for realistic detection. Physical Review A, 65 (2). Art. No. 023802. ISSN 1050-2947. doi:10.1103/PhysRevA.65.023802.

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Quantum trajectories describe the stochastic evolution of an open quantum system conditioned on continuous monitoring of its output, such as, by an ideal photodetector. Here we derive (non-Markovian) quantum trajectories for realistic photodetection, including the effects of efficiency, dead time, bandwidth, electronic noise, and dark counts. We apply our theory to a realistic cavity QED scenario and investigate the impact of such detector imperfections on the conditional evolution of the system state. A practical theory of quantum trajectories with realistic detection will be essential for experimental and technological applications of quantum feedback in many areas.

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Additional Information:©2002 The American Physical Society Received 6 March 2001; published 4 January 2002
Issue or Number:2
Record Number:CaltechAUTHORS:WARpra02
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6156
Deposited By: Archive Administrator
Deposited On:27 Nov 2006
Last Modified:08 Nov 2021 20:31

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