Forster, Florian and Muehlbacher, Max and Blattmann, Ralf and Schuh, Dieter and Wegscheider, Werner and Ludwig, Stefan and Kohler, Sigmund (2015) Landau-Zener interference at bichromatic driving. PHYSICAL REVIEW B, 92 (24): 245422. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
We investigate experimentally and theoretically the interference at avoided crossings which are repeatedly traversed as a consequence of an applied ac field. Our model system is a charge qubit in a serial double quantum dot connected to two leads. Our focus lies on effects caused by simultaneous driving with two different frequencies. We work out how the commensurability of the driving frequencies affects the symmetry of the interference patterns both in real space and in Fourier space. For commensurable frequencies, the symmetry depends sensitively on the relative phase between the two modes, whereas for incommensurable frequencies the symmetry of monochromatic driving is always recovered.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | INTENSE LASER FIELDS; SUPERCONDUCTING QUBIT; SCHRODINGER-EQUATION; QUANTUM SIMULATION; 2-LEVEL SYSTEM; DYNAMICS; TIME; COHERENCE; TRANSPORT; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 Apr 2019 08:09 |
| Last Modified: | 29 Apr 2019 08:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4284 |
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