Quantum trajectories for realistic detection
| Autor: | Howard M. Wiseman, Hideo Mabuchi, Prahlad Warszawski |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Physics
Quantum Physics Quantum network Physics::Instrumentation and Detectors FOS: Physical sciences Atomic and Molecular Physics and Optics Quantum technology Open quantum system Classical mechanics Quantum error correction Quantum process Quantum operation Quantum algorithm Statistical physics Quantum information Quantum Physics (quant-ph) Caltech Library Services |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 1094-1622 1050-2947 |
| Popis: | 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. Comment: 5 pages, 4 figures (3 .eps included, 1 jpeg as an additional file). To be published in Phys. Rev. A |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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