Avoided Crossing and sub-Fourier-sensitivity in Driven Quantum Systems
Avoided Crossing and sub-Fourier-sensitivity in Driven Quantum Systems
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 …