Single-electron entanglement and nonlocality
| Autor: | Joseph Bowles, David Dasenbrook, Patrick P. Hofer, Christian Flindt, Nicolas Brunner, Jonatan Bohr Brask |
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| Přispěvatelé: | University of Geneva, Department of Applied Physics, Aalto-yliopisto, Aalto University |
| Rok vydání: | 2016 |
| Předmět: |
nonlocality
Work (thermodynamics) FOS: Physical sciences General Physics and Astronomy ddc:500.2 02 engineering and technology Quantum entanglement Electron single-electron source electronic interferometer 01 natural sciences Superposition principle Quantum nonlocality Quantum mechanics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences 010306 general physics quantum transport Quantum optics Physics Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics 021001 nanoscience & nanotechnology Interferometry Bell's theorem Quantum Physics (quant-ph) entanglement 0210 nano-technology |
| Zdroj: | New Journal of Physics New Journal of Physics, Vol. 18 (2016) |
| ISSN: | 1367-2630 |
| DOI: | 10.1088/1367-2630/18/4/043036/meta |
| Popis: | 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. Comment: 15 pages, 2 figures |
| Databáze: | OpenAIRE |
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