Physics – Quantum Physics
Scientific paper
2006-10-28
Physical Review A 75, 032101 (2007)
Physics
Quantum Physics
6 pages, 3 figures
Scientific paper
10.1103/PhysRevA.75.032101
Quantum feedback control is a technology which can be used to drive a quantum system into a predetermined eigenstate. In this article, sufficient conditions for the experiment parameters of a quantum feedback control process of a homodyne QND measurement are given to guarantee feedback control of a spin-1/2 quantum system in case of imperfect detection efficiency. For the case of pure states and perfect detection efficiency, time scales of feedback control processes are calculated.
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