Global stability criterion for a quantum feedback control process on a single qubit and exponential stability in case of perfect detection efficiency
Journal Article
·
· Physical Review. A
- FH Suedwestfalen, University of Applied Sciences, Haldener Strasse 182, D-58095 Hagen (Germany)
Quantum feedback control is a technology that 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 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.
- OSTI ID:
- 20982232
- Journal Information:
- Physical Review. A, Vol. 75, Issue 3; Other Information: DOI: 10.1103/PhysRevA.75.032101; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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