Spectral Properties of Stochastic Resonance in Quantum Transport

authored by: 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.
Organisation(s): Institute of Solid State Physics
QuantumFrontiers
External Organisation(s): University of Konstanz
Spanish National Research Council (CSIC)
Type: Article
Journal: Physical review letters
Volume: 125
ISSN: 0031-9007
Publication date: 10.11.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Physics and Astronomy(all)
Electronic version(s): https://doi.org/10.48550/arXiv.2006.13773 (Access: Open)
https://doi.org/10.1103/PhysRevLett.125.206801 (Access: Closed)

BibTeX

@article{16337c15f13242589e6a7c094c0bd18b,
title = "Spectral Properties of Stochastic Resonance in Quantum Transport",
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.",
author = "Robert Hussein and Sigmund Kohler and Bayer, {Johannes C.} and Timo Wagner and Haug, {Rolf J.}",
note = "Funding Information: This work was supported by the Zukunftskolleg of the University of Konstanz and by the Spanish Ministry of Science, Innovation, and Universities under Grant No. MAT2017-86717-P and the CSIC Research Platform on Quantum Technologies PTI-001, by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany{\textquoteright}s Excellence Strategy—EXC-2123 Quantum Frontiers—390837967, and by the State of Lower Saxony, Germany, via Hannover School for Nanotechnology and School for Contacts in Nanosystems.",
year = "2020",
month = nov,
day = "10",
doi = "10.48550/arXiv.2006.13773",
language = "English",
volume = "125",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "20",
}