Project description
Decoding quantum advantage in light
Photonic quantum computers promise transformative computing power, but a key question remains: which quantum features are truly essential for outperforming classical machines? The EU-funded PRONOUNCE project aims to address this challenge by investigating non-Gaussian quantum correlations (nGQCs) in photon-subtracted, multimode Gaussian states. Using advanced mathematical frameworks – from stellar rank theory to symplectic geometry – the project aims to identify the specific correlations that enable quantum advantage, explore their links to phenomena such as Wigner negativity and quantum steering, and assess their potential for quantum networks. Hosted at Sorbonne Université’s Multimode Quantum Optics group under Dr Mattia Walschaers, PRONOUNCE combines deep theoretical insight with experimental expertise, paving the way for the next generation of photonic quantum computing.
Objective
Project PRONOUNCE aims at solving the open question about the need of non-Gaussian quantum correlations (nGQCs) for quantum advantage in photonic quantum computing. Through a diversity of techniques, ranging from stellar rank theory to symplectic geometry and distribution theory, the fellow will first characterize nGQCs that are essential for specific tasks and study them in the specific framework of photon-subtracted multimode Gaussian states (PSMG states). The project is articulated in 3 objectives, OI-III, whose purpose is to characterize and understand the problem from all possible aspects: in OI, the fellow will directly address the issue of resourcefulness of nGQCs, with the main goal of finding instances of tasks that require these correlations for a quantum advantage. In OII he will delve deeper into the theoretical link between non-Gaussianity and quantum correlations, particularly to assess if nGQCs are helpful to remotely generate Wigner negativity and if there is a relationship with quantum steering, as there is for Gaussian states. Finally, in OIII, he will explore the applications of these notions to quantum networks. PRONOUNCE will be carried out at Sorbonne Université, specifically in the Multimode Quantum Optics group of Laboratoire Kastler Brossel and the supervision of Dr. Mattia Walschaers; this is a leading equip in the field of multimode quantum optics, with a remarkable number of theoretical and experimental results scored during the last 30 years, ranging from pioneering studies on squeezed light to more recent investigations and generation of entangled quantum networks with more than 20 light modes. The peculiar mathematical background of the fellow, combined with the expertise of the team on quantum non-Gaussianity, will provide an ideal fit to carry out this ambitious project, whose result will entail a significant step forward in the development of photonic quantum computers with current and near-future technologies.
Fields of science (EuroSciVoc)
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CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2024-PF-01
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
75006 Paris
France
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