Driving quantum systems into decoherence-free subspaces by Lyapunov control

Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevA.80.052316

Title:	Driving quantum systems into decoherence-free subspaces by Lyapunov control
Authors:	Yi, X.X. Huang, X.L. Wu, C. Oh, C.H.
Issue Date:	12-Nov-2009
Citation:	Yi, X.X., Huang, X.L., Wu, C., Oh, C.H. (2009-11-12). Driving quantum systems into decoherence-free subspaces by Lyapunov control. Physical Review A - Atomic, Molecular, and Optical Physics 80 (5) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.80.052316
Abstract:	We present a scheme to drive a finite-dimensional quantum system into the decoherence-free subspaces (DFS) by Lyapunov control. Control fields are established by Lyapunov function. This proposal works well for both closed and open quantum systems, with replacing the DFS by desired subspaces for closed systems. An example which consists of a four-level system with three degenerate states driven by three lasers is presented to gain further insight on the scheme. Numerical simulations for the dynamics of the system are performed and the results are good. © 2009 The American Physical Society.
Source Title:	Physical Review A - Atomic, Molecular, and Optical Physics
URI:	http://scholarbank.nus.edu.sg/handle/10635/52879
ISSN:	10502947
DOI:	10.1103/PhysRevA.80.052316
Appears in Collections:	Staff Publications

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