Logical Stochastic Resonance with a Coulomb-Coupled Quantum-Dot Rectifier

P. Pfeffer, F. Hartmann, S. Höfling, M. Kamp, and L. Worschech
Phys. Rev. Applied 4, 014011 – Published 21 July 2015

Abstract

Noise is mostly considered to be an adverse factor in electronics. Yet, effects like logical stochastic resonance (LSR) can render electronic fluctuations useful. Here, we study LSR in a system consisting of two Coulomb-coupled quantum dots (QDs). We observe that voltage fluctuations applied to one of the QDs lead to a rectified and controllable current in the other QD. The interplay between applied noise and gate voltages enables our system to offer logic and, or, nand, and nor gate functionalities, which can be switched by either a variation of the noise or of a single gate voltage. For an optimal amount of noise, all four functionalities can be toggled by changing solely one single gate voltage. The presented results may prove beneficial for future autonomous, noise-tolerant, and energy-efficient electronics.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 12 February 2015

DOI:https://doi.org/10.1103/PhysRevApplied.4.014011

© 2015 American Physical Society

Authors & Affiliations

P. Pfeffer1, F. Hartmann1, S. Höfling1,2, M. Kamp1, and L. Worschech1

  • 1Technische Physik, Physikalisches Institut, Universität Würzburg and Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Am Hubland, D-97074 Würzburg, Germany
  • 2SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, United Kingdom

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 4, Iss. 1 — July 2015

Subject Areas
Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Applied

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×