Single-electron entanglement and nonlocality
Dasenbrook, David ; Bowles, Joseph ; Brask, Jonatan Bohr ; Hofer, Patrick P. LU
; Flindt, Christian
and Brunner, Nicolas
(2016)
In New Journal of Physics
18(4).
- Abstract
Motivated by recent progress in electron quantum optics, we revisit the question of single-electron entanglement, specifically whether the state of a single electron in a superposition of two separate spatial modes should be considered entangled. We first discuss a gedanken experiment with single-electron sources and detectors, and demonstrate deterministic (i. e. without post-selection) Bell inequality violation. This implies that the single-electron state is indeed entangled and, furthermore, nonlocal. We then present an experimental scheme where single-electron entanglement can be observed via measurements of the average currents and zero-frequency current cross-correlators in an electronic Hanbury Brown-Twiss interferometer driven... (More)
Motivated by recent progress in electron quantum optics, we revisit the question of single-electron entanglement, specifically whether the state of a single electron in a superposition of two separate spatial modes should be considered entangled. We first discuss a gedanken experiment with single-electron sources and detectors, and demonstrate deterministic (i. e. without post-selection) Bell inequality violation. This implies that the single-electron state is indeed entangled and, furthermore, nonlocal. We then present an experimental scheme where single-electron entanglement can be observed via measurements of the average currents and zero-frequency current cross-correlators in an electronic Hanbury Brown-Twiss interferometer driven by Lorentzian voltage pulses. We show that single-electron entanglement is detectable under realistic operating conditions. Our work settles the question of single-electron entanglement and opens promising perspectives for future experiments.
(Less)
- author
- Dasenbrook, David
; Bowles, Joseph
; Brask, Jonatan Bohr
; Hofer, Patrick P.
LU
; Flindt, Christian
and Brunner, Nicolas
- publishing date
- 2016-04-01
- type
- Contribution to journal
- publication status
- published
- keywords
- electronic interferometer, entanglement, nonlocality, quantum transport, single-electron source
- in
- New Journal of Physics
- volume
- 18
- issue
- 4
- article number
- 043036
- publisher
- IOP Publishing
- external identifiers
-
- scopus:84965010061
- ISSN
- 1367-2630
- DOI
- 10.1088/1367-2630/18/4/043036
- language
- English
- LU publication?
- no
- id
- c7fd277f-6976-4d0e-a0b5-d77a39c06c1d
- date added to LUP
- 2019-05-14 09:49:56
- date last changed
- 2022-04-25 23:33:44
@article{c7fd277f-6976-4d0e-a0b5-d77a39c06c1d,
abstract = {{<p>Motivated by recent progress in electron quantum optics, we revisit the question of single-electron entanglement, specifically whether the state of a single electron in a superposition of two separate spatial modes should be considered entangled. We first discuss a gedanken experiment with single-electron sources and detectors, and demonstrate deterministic (i. e. without post-selection) Bell inequality violation. This implies that the single-electron state is indeed entangled and, furthermore, nonlocal. We then present an experimental scheme where single-electron entanglement can be observed via measurements of the average currents and zero-frequency current cross-correlators in an electronic Hanbury Brown-Twiss interferometer driven by Lorentzian voltage pulses. We show that single-electron entanglement is detectable under realistic operating conditions. Our work settles the question of single-electron entanglement and opens promising perspectives for future experiments.</p>}},
author = {{Dasenbrook, David and Bowles, Joseph and Brask, Jonatan Bohr and Hofer, Patrick P. and Flindt, Christian and Brunner, Nicolas}},
issn = {{1367-2630}},
keywords = {{electronic interferometer; entanglement; nonlocality; quantum transport; single-electron source}},
language = {{eng}},
month = {{04}},
number = {{4}},
publisher = {{IOP Publishing}},
series = {{New Journal of Physics}},
title = {{Single-electron entanglement and nonlocality}},
url = {{http://dx.doi.org/10.1088/1367-2630/18/4/043036}},
doi = {{10.1088/1367-2630/18/4/043036}},
volume = {{18}},
year = {{2016}},
}