Single-electron entanglement and nonlocality
Research output: Contribution to journal › Article
- Université de Genève
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.
|Journal||New Journal of Physics|
|Publication status||Published - 1 Apr 2016|
|MoE publication type||A1 Journal article-refereed|
- electronic interferometer, entanglement, nonlocality, quantum transport, single-electron source