Details
| Original language | English |
|---|---|
| Pages (from-to) | 218-222 |
| Number of pages | 5 |
| Journal | Nature nanotechnology |
| Volume | 12 |
| Issue number | 3 |
| Early online date | 7 Nov 2016 |
| Publication status | Published - Mar 2017 |
Abstract
Feedback control of quantum mechanical systems is rapidly attracting attention not only due to fundamental questions about quantum measurements, but also because of its novel applications in many fields in physics. Quantum control has been studied intensively in quantum optics but progress has recently been made in the control of solid-state qubits as well. In quantum transport only a few active and passive feedback experiments have been realized on the level of single electrons, although theoretical proposals exist. Here we demonstrate the suppression of shot noise in a single-electron transistor using an exclusively electronic closed-loop feedback to monitor and adjust the counting statistics. With increasing feedback response we observe a stronger suppression and faster freezing of charge current fluctuations. Our technique is analogous to the generation of squeezed light with in-loop photodetection as used in quantum optics. Sub-Poisson single-electron sources will pave the way for high-precision measurements in quantum transport similar to optical or optomechanical equivalents.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Bioengineering
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Biomedical Engineering
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Electrical and Electronic Engineering
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In: Nature nanotechnology, Vol. 12, No. 3, 03.2017, p. 218-222.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Strong suppression of shot noise in a feedback-controlled single-electron transistor
AU - Wagner, Timo
AU - Strasberg, Philipp
AU - Bayer, Johannes C.
AU - Rugeramigabo, Eddy P.
AU - Brandes, Tobias
AU - Haug, Rolf J.
PY - 2017/3
Y1 - 2017/3
N2 - Feedback control of quantum mechanical systems is rapidly attracting attention not only due to fundamental questions about quantum measurements, but also because of its novel applications in many fields in physics. Quantum control has been studied intensively in quantum optics but progress has recently been made in the control of solid-state qubits as well. In quantum transport only a few active and passive feedback experiments have been realized on the level of single electrons, although theoretical proposals exist. Here we demonstrate the suppression of shot noise in a single-electron transistor using an exclusively electronic closed-loop feedback to monitor and adjust the counting statistics. With increasing feedback response we observe a stronger suppression and faster freezing of charge current fluctuations. Our technique is analogous to the generation of squeezed light with in-loop photodetection as used in quantum optics. Sub-Poisson single-electron sources will pave the way for high-precision measurements in quantum transport similar to optical or optomechanical equivalents.
AB - Feedback control of quantum mechanical systems is rapidly attracting attention not only due to fundamental questions about quantum measurements, but also because of its novel applications in many fields in physics. Quantum control has been studied intensively in quantum optics but progress has recently been made in the control of solid-state qubits as well. In quantum transport only a few active and passive feedback experiments have been realized on the level of single electrons, although theoretical proposals exist. Here we demonstrate the suppression of shot noise in a single-electron transistor using an exclusively electronic closed-loop feedback to monitor and adjust the counting statistics. With increasing feedback response we observe a stronger suppression and faster freezing of charge current fluctuations. Our technique is analogous to the generation of squeezed light with in-loop photodetection as used in quantum optics. Sub-Poisson single-electron sources will pave the way for high-precision measurements in quantum transport similar to optical or optomechanical equivalents.
UR - http://www.scopus.com/inward/record.url?scp=85008627327&partnerID=8YFLogxK
U2 - 10.1038/nnano.2016.225
DO - 10.1038/nnano.2016.225
M3 - Article
C2 - 27819692
AN - SCOPUS:85008627327
VL - 12
SP - 218
EP - 222
JO - Nature nanotechnology
JF - Nature nanotechnology
SN - 1748-3387
IS - 3
ER -