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Error-Proof Optical Bell-State Analyzer

Objective

We propose to solve the long-standing problem of building a complete Bell-state analyser that is free from measurement errors. The realisation of such an error-proof Bell-state analyser constitutes a groundbreaking milestone for information technologies as it forms the key component for universal optical quantum computers and long-distance quantum communication. Reliable Bell-state detection will immediately impact the development of emerging quantum technologies, facilitate high-precision time-keeping and sensing, and enable future technologies such as secure communication or quantum cloud computing. This major conceptual and technological advancement will be made possible by combining two of the most recent breakthroughs at the frontier of quantum optics and nanophotonics: (i) ultra-strong quantum optical nonlinearities obtained from Rydberg-atom interactions or from a single quantum emitter strongly coupled to an optical microresonator and (ii) nanofabricated optical waveguide chips that permit high-level control of light propagation at the wavelength scale. The ambitious goal of the ErBeStA-project will be reached within a consortium which combines the essential conceptual and technological expertise in all required key areas and contributes complementary cutting-edge experimental setups that facilitate all necessary technological developments. Building the proposed Bell-state analyser will involve the development of advanced optical devices such as nondestructive photon-number-resolving detectors as well as configurable photon-number-specific filters and sorters, all of which constitute major scientific and technological breakthroughs on their own. Overall, ErBeStA will provide the first nonlinear light-matter interface coupled to on-chip complex optical circuitry, and, thereby, lay the foundation for future technology built on scalable quantum nonlinear devices.

Call for proposal

H2020-FETOPEN-1-2016-2017
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Coordinator

TECHNISCHE UNIVERSITAET WIEN
Address
Karlsplatz 13
1040 Wien
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 424 887,50

Participants (10)

UNIVERSITAET ROSTOCK
EU contribution
€ 338 917,50
Address
Universitatsplatz 1
18055 Rostock
Activity type
Higher or Secondary Education Establishments
THE UNIVERSITY OF NOTTINGHAM
EU contribution
€ 385 476,25
Address
University Park
NG7 2RD Nottingham
Activity type
Higher or Secondary Education Establishments
UNIVERSITAT WIEN
EU contribution
€ 306 436,25
Address
Universitatsring 1
1010 Wien
Activity type
Higher or Secondary Education Establishments
SYDDANSK UNIVERSITET

Participation ended

EU contribution
€ 291 733,71
Address
Campusvej 55
5230 Odense M
Activity type
Higher or Secondary Education Establishments
AARHUS UNIVERSITET
EU contribution
€ 318 073,75
Address
Nordre Ringgade 1
8000 Aarhus C
Activity type
Higher or Secondary Education Establishments
FORSCHUNGSVERBUND BERLIN EV

Participation ended

EU contribution
€ 254 405,79
Address
Rudower Chaussee 17
12489 Berlin
Activity type
Research Organisations
EBERHARD KARLS UNIVERSITAET TUEBINGEN
EU contribution
€ 184 375
Address
Geschwister-scholl-platz
72074 Tuebingen
Activity type
Higher or Secondary Education Establishments
HUMBOLDT-UNIVERSITAET ZU BERLIN
EU contribution
€ 200 292,50
Address
Unter Den Linden 6
10117 Berlin
Activity type
Higher or Secondary Education Establishments
RHEINISCHE FRIEDRICH-WILHELMS-UNIVERSITAT BONN
EU contribution
€ 217 755,04
Address
Regina Pacis Weg 3
53113 Bonn
Activity type
Higher or Secondary Education Establishments
FERDINAND-BRAUN-INSTITUT GGMBH LEIBNIZ- INSTITUT FUR HOCHSTFREQUENZTECNIK
EU contribution
€ 74 300,46
Address
Gustav-kirchhoff-strasse 4
12489 Berlin
Activity type
Research Organisations