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Error-Proof Optical Bell-State Analyzer

Project information

Grant agreement ID: 800942

Status

Ongoing project

  • Start date

    1 July 2018

  • End date

    30 June 2021

Funded under:

H2020-EU.1.2.1.

  • Overall budget:

    € 2 996 653,75

  • EU contribution

    € 2 996 653,75

Coordinated by:

TECHNISCHE UNIVERSITAET WIEN

Austria

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.

Coordinator

TECHNISCHE UNIVERSITAET WIEN

Address

Karlsplatz 13
1040 Wien

Austria

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 424 887,50

Participants (8)

UNIVERSITAET ROSTOCK

Germany

EU Contribution

€ 338 917,50

THE UNIVERSITY OF NOTTINGHAM

United Kingdom

EU Contribution

€ 385 476,25

UNIVERSITAT WIEN

Austria

EU Contribution

€ 306 436,25

SYDDANSK UNIVERSITET

Denmark

EU Contribution

€ 509 488,75

AARHUS UNIVERSITET

Denmark

EU Contribution

€ 318 073,75

FORSCHUNGSVERBUND BERLIN EV

Germany

EU Contribution

€ 328 706,25

EBERHARD KARLS UNIVERSITAET TUEBINGEN

Germany

EU Contribution

€ 184 375

HUMBOLDT-UNIVERSITAET ZU BERLIN

Germany

EU Contribution

€ 200 292,50

Project information

Grant agreement ID: 800942

Status

Ongoing project

  • Start date

    1 July 2018

  • End date

    30 June 2021

Funded under:

H2020-EU.1.2.1.

  • Overall budget:

    € 2 996 653,75

  • EU contribution

    € 2 996 653,75

Coordinated by:

TECHNISCHE UNIVERSITAET WIEN

Austria