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Quantum superiority with coherent states

Total Cost €


EC-Contrib. €






 QUSCO project word cloud

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

lines    distributions    technologies    switching    demonstration    scheduling    components    boson    security    mechanics    outperform    secret    dna    grail    complexity    holy    impossible    view    individually    optical    silicon    extremely    point    framework    protocols    science    interactions    data    sampling    counterparts    photonic    communication    superiority    sequencing    bosonic    light    communications    implementations    unconditional    operations    physical    efficient    experimentally    quest    practical    led    cryptography    platform    larger    notably    fast    mining    powerful    society    basis    theoretical    accessible    milestone    multiple    everyday    power    scalable    tremendous    experimental    appealing    opens    computations    keys    reconfigurable    routing    computation    superposition    algorithms    couplers    elementary    enhanced    efficiency    modes    readily    bits    monitoring    compact    circuits    delay    hard    quantum    mapping    coherent    explored    decomposed   

Project "QUSCO" 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]
 Total cost 1˙494˙738 €
 EC max contribution 1˙494˙738 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2018
 Duration (year-month-day) from 2018-01-01   to  2022-12-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The unique features of quantum mechanics enable communication and computation tasks impossible to achieve by classical means. This opens a tremendous potential for enhancing the power, efficiency and security of everyday interactions in our information-based society. The quest of the demonstration in physical systems of quantum superiority has led to milestone implementations, most notably of the distribution of secret keys with unconditional security or of elementary computations such as the efficient sampling of bosonic distributions.

In this project, we propose to develop and experimentally demonstrate a framework where quantum resources can be used to outperform their classical counterparts for a much larger range of problems than key distribution or boson sampling, with applications in algorithms, cryptography, communications, scheduling, routing, data mining, process monitoring and control or DNA sequencing. The theoretical basis of our framework is decomposed in three well defined elements-circuits, of increasing complexity, which can individually be used for specific quantum enhanced applications and together lead to the demonstration of the holy grail of quantum information science – quantum superiority for hard computation algorithms. The implementation of all the elements will be based on a photonic experimental platform exploiting a mapping of quantum information protocols involving multiple quantum bits of information to protocols based on coherent states of light in a superposition of optical modes. This is extremely appealing from a practical point of view and will be fully explored, in particular using silicon photonic technologies that allow for scalable devices involving fast switching operations, compact delay lines, and reconfigurable couplers, the main components of our circuits.

Our project sets a highly ambitious target, providing on the way powerful and readily accessible applications of quantum technologies.


year authors and title journal last update
List of publications.
2019 Mathieu Bozzio, Eleni Diamanti, Frédéric Grosshans
Semi-device-independent quantum money with coherent states
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.99.022336
Physical Review A 99/2 2019-10-29
2019 Niraj Kumar, Iordanis Kerenidis, Eleni Diamanti
Experimental demonstration of quantum advantage for one-way communication complexity surpassing best-known classical protocol
published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-019-12139-z
Nature Communications 10/1 2019-10-29
2018 Mathieu Bozzio, Adeline Orieux, Luis Trigo Vidarte, Isabelle Zaquine, Iordanis Kerenidis, Eleni Diamanti
Experimental investigation of practical unforgeable quantum money
published pages: , ISSN: 2056-6387, DOI: 10.1038/s41534-018-0058-2
npj Quantum Information 4/1 2019-10-29
2018 Juan Miguel Arrazola, Eleni Diamanti, Iordanis Kerenidis
Quantum superiority for verifying NP-complete problems with linear optics
published pages: , ISSN: 2056-6387, DOI: 10.1038/s41534-018-0103-1
npj Quantum Information 4/1 2019-10-29
2018 Ulysse Chabaud, Eleni Diamanti, Damian Markham, Elham Kashefi, Antoine Joux
Optimal quantum-programmable projective measurement with linear optics
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.98.062318
Physical Review A 98/6 2019-10-29

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

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