Spectral Properties of Stochastic Resonance in Quantum Transport
- verfasst von
- Robert Hussein, Sigmund Kohler, Johannes C. Bayer, Timo Wagner, Rolf J. Haug
- Abstract
We investigate theoretically and experimentally stochastic resonance in a quantum dot coupled to electron source and drain via time-dependent tunnel barriers. A central finding is a transition visible in the current noise spectrum as a bifurcation of a dip originally at zero frequency. The transition occurs close to the stochastic resonance working point and relates to quantized pumping. For the evaluation of power spectra from measured waiting times, we generalize a result from renewal theory to the ac-driven case. Moreover, we develop a master equation method to obtain phase-averaged current noise spectra for driven quantum transport.
- Organisationseinheit(en)
-
Institut für Festkörperphysik
QuantumFrontiers
- Externe Organisation(en)
-
Universität Konstanz
Spanish National Research Council (CSIC)
- Typ
- Artikel
- Journal
- Physical review letters
- Band
- 125
- ISSN
- 0031-9007
- Publikationsdatum
- 10.11.2020
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Allgemeine Physik und Astronomie
- Elektronische Version(en)
-
https://doi.org/10.48550/arXiv.2006.13773 (Zugang:
Offen)
https://doi.org/10.1103/PhysRevLett.125.206801 (Zugang: Geschlossen)