paper

Floquet theorem for open systems and its applications

arXiv:1512.05562 · doi:10.1103/PhysRevA.93.032121

Abstract

For a closed system with periodic driving, Floquet theorem tells that the time evolution operator can be written as with , and is Hermitian and time-independent called Floquet Hamiltonian. In this work, we extend the Floquet theorem from closed systems to open systems described by a Lindblad master equation that is periodic in time. Lindbladian expansion in powers of is derived, where is the driving frequency. Two examples are presented to illustrate the theory. We find that appropriate trace preserving time-independent Lindbladian of such a periodically driven system can be constructed by the application of open system Floquet theory, and it agrees well with the exact dynamics in the high frequency limit.

5 pages, 4 figures

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