Coherent Destruction of Tunneling and Dark Floquet State
arXiv:1305.1197 · doi:10.1088/1367-2630/16/1/013007
Abstract
We study a system of three coherently coupled states, where one state is shifted periodically against the other two. We discover such a system possesses a dark Floquet state at zero quasienergy and always with negligible population at the intermediate state. This dark Floquet state manifests itself dynamically in terms of the suppression of inter-state tunneling, a phenomenon known as coherent destruction of tunneling. We suggest to call it dark coherent destruction of tunneling (DCDT). At high frequency limit for the periodic driving, this Floquet state reduces to the well-known dark state widely used for STIRAP. Our results can be generalized to systems with more states and can be verified with easily implemented experiments within current technologies.
5 pages, 3 figures
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- Coherent control of dissipative dynamics in a periodically driven lattice array
- Strong frequency dependence of transport in the driven Fano-Anderson model
- Floquet topological properties in the Non-Hermitian long-range system with complex hopping amplitudes