Cubero, D;
Robb, GRM;
Renzoni, F;
(2018)
Avoided Crossing and sub-Fourier-sensitivity in Driven Quantum Systems.
Physical Review Letters
, 121
, Article 213904. 10.1103/PhysRevLett.121.213904.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Avoided Crossing and sub-Fourier-sensitivity in Driven Quantum Systems |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.121.213904 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.121.213904 |
| Language: | English |
| Additional information: | This is the published version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10060903 |
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