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Quantum Optics with single flying electrons

Total Cost €


EC-Contrib. €






Project "FLYELEC" data sheet

The following table provides information about the project.


Organization address
address: RUE MICHEL ANGE 3
city: PARIS
postcode: 75794

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Project website
 Total cost 173˙076 €
 EC max contribution 173˙076 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2014
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2015
 Duration (year-month-day) from 2015-04-01   to  2017-03-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

In quantum optics, a single photon source as well as a single photon detector is the elementary building block for the manipulation of information coded into a quantum state, a qubit. When combined with beam splitters, polarizers etc., photonic qubits can be manipulated to process quantum information. A well-known example is quantum cryptography, a secure way to transmit information. In analogy with photons, similar experiments should be possible with single flying electrons in a solid-state device. The advantage of performing quantum optics experiments with flying electrons is the existing Coulomb interactions between the electrons. Photons are basically non-interacting quantum particles and they therefore have a longer coherence time than electrons. However, due to the absence of interactions it is more difficult to construct a two-qubit gate, which operates at the single photon level. This represents a fundamental limitation to the development of quantum computation with photons. Recent experiments have now demonstrated that quantum optics with single flying electrons is in reach. Indeed, it has been shown that a single electron can be transferred on-demand between distant quantum dots. In these experiments, flying electrons have been transported by a sound wave and high fidelity for single electron emission as well as single electron detection has been demonstrated. This opens the possibility to perform quantum optics experiments with electrons in solid-state devices, which we aim to realize with this proposal. Due to the fact that electrons in solids are strongly interacting particles, new quantum entanglement schemes can be envisioned, not possible with photons.


year authors and title journal last update
List of publications.
2015 S. Takada, M. Yamamoto, C. Bäuerle, K. Watanabe, A. Ludwig, A. D. Wieck, S. Tarucha
Measurement of the transmission phase of an electron in a quantum two-path interferometer
published pages: 63101, ISSN: 0003-6951, DOI: 10.1063/1.4928035
Applied Physics Letters 107/6 2019-07-23
2016 S. Takada, M. Yamamoto, C. Bäuerle, A. Alex, J. von Delft, A. Ludwig, A. D. Wieck, S. Tarucha
Low-temperature behavior of transmission phase shift across a Kondo correlated quantum dot
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.94.081303
Physical Review B 94/8 2019-07-23
2016 B. Bertrand, S. Hermelin, S. Takada, M. Yamamoto, S. Tarucha, A. Ludwig, A. D. Wieck, C. Bäuerle and T. Meunier
Fast spin information transfer between distant quantum dots using individual electrons
published pages: 672–676, ISSN: 1748-3387, DOI: 10.1038/nnano.2016.82
Nature Nanotechnology 11 2019-07-23

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