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SQuaPh

Scalable Quantum Photonics with Ultra Bright Photon Sources

Total Cost €

EC-Contrib. €

Partnership

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Outcomes and
results

SQuaPh project word cloud

Explore the words cloud of the SQuaPh project. It provides you a very rough idea of what is the project "SQuaPh" about.

scalable true times photon entangled extraction fidelity deterministic swap networks heralded magnitude propagate decoherence gates qd subsequent good laboratoire orders successive semiconductor generation experimental logic computation interaction fabricated cavity rates indistinguishable team optical single ultrabright quantum linear incident crystals photons intrinsically constituting teleportation et unprecedented dot microcavity realize relies distances source photonique diminishes background qubits technological device controllably protocols inserting flying until defective de host flux pillar purcell nanostructures limited builds pairs entangle brightness deterministically communications enhances coherence larger entanglement probabilistic effect time sources perform conceptual

Project "SQuaPh" data sheet

The following table provides information about the project.

Coordinator	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS Organization address address: RUE MICHEL ANGE 3 city: PARIS postcode: 75794 website: www.cnrs.fr 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	http://quantumdot.eu/portfolio/dr-carlos-anton-solanas/
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-2015
Funding Scheme	MSCA-IF-EF-ST
Starting year	2016
Duration (year-month-day)	from 2016-11-01 to 2018-10-31

Partnership

Take a look of project's partnership.

#	participants	country	role	EC contrib. [€]
1	CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS Organization address address: RUE MICHEL ANGE 3 city: PARIS postcode: 75794 website: www.cnrs.fr contact info title: n.a. name: n.a. surname: n.a. function: n.a. email: n.a. telephone: n.a. fax: n.a.	FR (PARIS)	coordinator	173˙076.00

Map

Project objective

The development of quantum networks relies on true single-photon sources and deterministic quantum logic gates. Photons are the most promising flying qubits, capable to propagate long distances without decoherence. However, until now, quantum communications protocols and optical quantum computation have been implemented using defective single-photon sources and probabilistic quantum gates. For a long time, the best single-photon sources have been heralded non-linear crystals where photon-pairs are generated. Such sources can present high coherence properties although they are intrinsically limited to a very low photon flux.

This project builds up on major steps obtained in the host team, Laboratoire de Photonique et de Nanostructures, in terms of true single-photon generation and control. By deterministically inserting a quantum dot (QD) in a semiconductor microcavity pillar, the host team fabricated photon sources with quantum properties as good as the currently used sources, but with an unprecedented brightness of 2 orders of magnitude larger. The cavity not only enhances the interaction of the incident photons with the QD state but also the subsequent photon extraction of the device. The Purcell effect diminishes the decoherence processes, constituting an ultrabright source of highly indistinguishable, single-photons.

Based on the unique technological, experimental and conceptual knowledge developed by the host team, and on the background of the applicant, our successive objectives is to realize scalable quantum entanglement: to entangle two-photon states with our ultrabright QD-cavity systems at high rates, to use them to perform high fidelity teleportation with long coherence times between 2 different sources, and finally to controllably swap the entanglement between 2 entangled photon-pairs.

Publications

List of publications.
year	authors and title	journal	last update
2017	Lorenzo De Santis, Carlos AntÃ³n, Bogdan Reznychenko, Niccolo Somaschi, Guillaume Coppola, Jean Senellart, Carmen GÃ³mez, Aristide LemaÃ®tre, Isabelle Sagnes, Andrew G. White, LoÃ¯c Lanco, Alexia AuffÃ¨ves, Pascale Senellart A solid-state single-photon filter published pages: 663-667, ISSN: 1748-3387, DOI: 10.1038/NNANO.2017.85	Nature Nanotechnology 12/7	2019-05-25
2017	Carlos AntÃ³n, Paul Hilaire, Christian A. Kessler, Justin Demory, Carmen GÃ³mez, Aristide LemaÃ®tre, Isabelle Sagnes, Norberto Daniel Lanzillotti-Kimura, Olivier Krebs, Niccolo Somaschi, Pascale Senellart, LoÃ¯c Lanco Tomography of the optical polarization rotation induced by a single quantum dot in a cavity published pages: 1326, ISSN: 2334-2536, DOI: 10.1364/optica.4.001326	Optica 4/11	2019-05-25
2018	P. Hilaire, C. AntÃ³n, C. Kessler, A. LemaÃ®tre, I. Sagnes, N. Somaschi, P. Senellart, L. Lanco Accurate measurement of a 96% input coupling into a cavity using polarization tomography published pages: 201101, ISSN: 0003-6951, DOI: 10.1063/1.5026799	Applied Physics Letters 112/20	2019-05-25

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The information about "SQUAPH" are provided by the European Opendata Portal: CORDIS opendata.