Journal article

Interaction effects and charge quantization in single-particle quantum dot emitters

Abstract:: We discuss a theoretical model of an on-demand single-particle emitter that employs a quantum dot, attached to an integer or fractional quantum Hall edge state. Via an exact mapping of the model onto the spin-boson problem we show that Coulomb interactions between the dot and the chiral quantum Hall edge state, unavoidable in this setting, lead to a destruction of precise charge quantization in the emitted wave-packet. Our findings cast doubts on the viability of this set-up as a single-particle source of quantized charge pulses. We further show how to use a spin-boson master equation approach to explicitly calculate the current pulse shape in this set-up.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Wagner, G., Nguyen, D., Kovrizhin, D., & Simon, S. (2019). Interaction effects and charge quantization in single-particle quantum dot emitters. Physical Review Letters.

MLA Style

Wagner, G., et al. “Interaction Effects and Charge Quantization in Single-Particle Quantum Dot Emitters.” Physical Review Letters, American Physical Society, 2019.

Chicago Style

Wagner, G, D Nguyen, D Kovrizhin, and S Simon. 2019. “Interaction Effects and Charge Quantization in Single-Particle Quantum Dot Emitters.” Physical Review Letters.
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Files:: 1808.08240.pdf

(Preview, Accepted manuscript, pdf, 496.8KB, Terms of use)

Publisher copy:: 10.1103/PhysRevLett.122.127701

Authors

+ Wagner, G More by this author

Institution:: University of Oxford
Division:: MPLS Division
Department:: Physics
Oxford college:: Merton College
Role:: Author

+ Nguyen, D More by this author

Institution:: University of Oxford
Division:: MPLS Division
Department:: Physics
Role:: Author

+ Kovrizhin, D More by this author

Institution:: University of Oxford
Division:: MPLS Division
Department:: Physics
Role:: Author

+ Simon, S More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Theoretical Physics
Oxford college:: Somerville College
Role:: Author

Publisher:: American Physical Society
Journal:: Physical Review Letters More from this journal
Publication date:: 2019-03-29
Acceptance date:: 2019-03-12
DOI:: 10.1103/PhysRevLett.122.127701
EISSN:: 1079-7114
ISSN:: 0031-9007

Pubs id:: pubs:981337
UUID:: uuid:0e6873e3-5462-4801-b363-65679bafe84e
Local pid:: pubs:981337
Source identifiers:: 981337
Deposit date:: 2019-03-12

Terms of use

Copyright holder:: American Physical Society
Copyright date:: 2019
Notes:: © 2019 American Physical Society. This is the accepted manuscript version of the article. The final version is available online from American Physical Societyat: https://doi.org/10.1103/PhysRevLett.122.127701

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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