Feedback control of quantum transport.

@article{Brandes2010FeedbackCO,
  title={Feedback control of quantum transport.},
  author={T. Brandes},
  journal={Physical review letters},
  year={2010},
  volume={105 6},
  pages={
          060602
        }
}
  • T. Brandes
  • Published 30 April 2010
  • Physics, Medicine
  • Physical review letters
The current through nanostructures like quantum dots can be stabilized by a classical feedback loop that continuously adjusts system parameters as a function of the number of tunnelled particles n. At large times, the feedback loop freezes the fluctuations of n, which leads to highly accurate, continuous single particle transfers. For the simplest case of feedback acting simultaneously on all system parameters, we show how to reconstruct the original full counting statistics from the frozen… Expand
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  • Physics, Medicine
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
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How to include a delay between detection and control operation in the master equation theory of feedback-controlled quantum transport and how this formalism can be used to model finite detector bandwidth are described. Expand
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  • Physics, Mathematics
  • IEEE Transactions on Control Systems Technology
  • 2019
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A double quantum dot monitored by a nearby quantum point contact is considered, where the measurement-induced backaction plays an important role, and a simple feedback-control law is proposed to realize and stabilize the tunneling current. Expand
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The suppression of shot noise in a single-electron transistor is demonstrated using an exclusively electronic closed-loop feedback to monitor and adjust the counting statistics and with increasing feedback response the authors observe a stronger suppression and faster freezing of charge current fluctuations. Expand
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References

SHOWING 1-10 OF 31 REFERENCES
Counting statistics of single electron transport in a quantum dot.
We have measured the full counting statistics of current fluctuations in a semiconductor quantum dot (QD) by real-time detection of single electron tunneling with a quantum point contact. This method… Expand
Shot noise in coupled dots and the “fractional charges”
We consider the problem of shot noise in resonant tunneling through double quantum dots in the case of interacting particles. Using a many-body quantum mechanical description we evaluate the… Expand
Signatures of critical full counting statistics in a quantum-dot chain
We consider current shot noise and the full counting statistics in a chain of quantum dots which exhibits a continuous nonequilibrium phase transition as a function of the tunnel couplings of the… Expand
Microscopic derivation of rate equations for quantum transport.
  • Gurvitz, Prager
  • Physics, Medicine
  • Physical review. B, Condensed matter
  • 1996
It is shown that under certain conditions the resonant transport in mesoscopic systems can be described by modified (quantum) rate equations, which resemble the optical Bloch equations with some… Expand
Quantum noise reduction by photodetection with feedback
A simple model is proposed to account for the generation of sub-shot noise light by feedback of the photocurrent. The model is based on a variable beam splitter controlled by the photocurrent from a… Expand
Full counting statistics in strongly interacting systems: non-Markovian effects.
TLDR
The approach for transport through a single-level quantum dot and a metallic single-electron transistor to second order in the tunnel coupling is illustrated and under which circumstances non-Markovian effects appear in the transport properties. Expand
Observation of sub-poissonian photoelectron statistics in a negative feedback semiconductor laser
Abstract The photo-current fluctuation spectra and the photoelectron statistics of a negative feedback stabilized semiconductor laser are measured. The photo-current spectral density is reduced by 7… Expand
Quantum Measurement and Control
In the last two decades there has been an enormous progress in the experimental investigation of single quantum systems. This progress covers fields such as quantum optics, quantum computation,… Expand
Noise measurement of a quantized charge pump
We study the noise properties of a gate controlled single electron pump at a driving frequency fp=400MHz. We observe a significant reduction of the noise power on the current plateaus. This is a… Expand
Gigahertz quantized charge pumping
The high-speed, high-accuracy transport of single electrons in nanoscale devices is predicted to underpin future electronics. A key and topical application is the development of a fundamental… Expand
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