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Coherent control in quantum transport: Amplification, filtering and switching at finite bias

Thethi, Rajpal; Emary, Clive

Authors

Rajpal Thethi

Clive Emary



Abstract

We consider coherent feedback control of quantum transport and focus on the application of simple controllers and the effects of a finite bias voltage. We show that simple single-parameter controllers can give rise to a range of useful effects such as amplification of changes in plant transmission, increased resolution of energy filtration, and the detection of differences between otherwise indistinguishable plants. We explore how these effects are impacted by the phase-averaging effects associated with finite bias and identify important voltage scales for the maintenance of the functionalities achieved through feedback control.

Citation

Thethi, R., & Emary, C. (2017). Coherent control in quantum transport: Amplification, filtering and switching at finite bias. Quantum Science and Technology, 2(2), 024011. https://doi.org/10.1088/2058-9565/aa72c8

Journal Article Type Article
Acceptance Date Mar 10, 2017
Online Publication Date Jun 15, 2017
Publication Date Jun 1, 2017
Deposit Date Jun 28, 2018
Publicly Available Date Mar 28, 2024
Journal Quantum Science and Technology
Print ISSN 2058-9565
Electronic ISSN 2058-9565
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 2
Issue 2
Pages 024011
DOI https://doi.org/10.1088/2058-9565/aa72c8
Public URL https://hull-repository.worktribe.com/output/898311
Publisher URL http://iopscience.iop.org/article/10.1088/2058-9565/aa72c8
Related Public URLs https://eprints.ncl.ac.uk/238561
Additional Information Journal title: Quantum Science and Technology; Article type: paper; Article title: Coherent control in quantum transport: amplification, filtering and switching at finite bias; Copyright information: © 2017 IOP Publishing Ltd; Date received: 2017-03-10; Date accepted: 2017-05-12; Online publication date: 2017-06-16

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