Avoided Crossing and sub-Fourier-sensitivity in Driven Quantum Systems.
Avoided Crossing and sub-Fourier-sensitivity in Driven Quantum Systems.
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DOI：
10.1103/physrevlett.121.213904
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发表时间：
2018-11
影响因子：
8.6
通讯作者：
D. Cubero;G. Robb;F. Renzoni
中科院分区：
文献类型：
--
作者：
D. Cubero;G. Robb;F. Renzoni
The response of a linear system to an external perturbation is governed by the Fourier limit, with the inverse of the interaction time constituting a lower limit for the system bandwidth. This does not hold for nonlinear systems, which can thus exhibit sub-Fourier-behavior. The present Letter identifies a mechanism for sub-Fourier-sensitivity in driven quantum systems, which relies on avoided crossing between Floquet states. Features up to three orders of magnitude finer than the Fourier limit are presented.
