Project description
Heralding the future of photonic quantum technologies
The unique properties of quantum mechanics, along with related research and technologies, are set to revolutionise computation, particularly through technologies like semiconductor quantum dots, which could lead to the future of photonic quantum technologies. However, challenges such as fine structure splitting (FSS) have hindered progress, despite numerous efforts and approaches. With support from the Marie Skłodowska-Curie Actions programme, the EReFaPhoc project will introduce a paradigm shift in the search for solutions by evolving a method that restores entanglement to overcome FSS. The project aims to use its findings to develop a groundbreaking, first-of-its-kind fast photonic circuit on a lithium niobate platform, enabling full integration of quantum dots on photonic chips.
Objective
The world is currently on the verge of a new technological revolution, rooted on the possibility of harnessing unique properties of quantum mechanics such as entanglement to implement novel paradigms for computation. Semiconductor quantum dots are excellent candidates to become the sources at the heart of future photonic quantum technologies due to their capability of emitting single and even entangled photons. However, the presence of a fine structure splitting (FSS) between the excitonic levels significantly degrades the quality of the entangled emission from quantum dots and causes the latter to emit random entangled states instead of always the same Bell’s one: this pervasive problem has proved to be a major hindrance and prompted significant efforts to devise mitigation strategies.
All the approaches implemented so far assume that, in order to prevent the degradation of entangled photon emission, its prime cause, the fine structure splitting of the source, should be removed. Several approaches have yielded excellent results in this sense, but at the cost of unwanted side-effects or increases in fabrication complexity and introduction of additional challenges for photonic integration.
I propose to implement a complete paradigm shift in the search for a solution to this problem and show that entanglement restoral can be achieved after the emission of the photons from the source: as the latter emits a statistical mixture of entangled states when an FSS is present, and entanglement is not destroyed on a fundamental level, entanglement restoral can in principle be achieved by applying a sequence of logic gates that transforms any component of the ensemble to the same Bell state.
I propose to implement this approach and show its superiority for integrated quantum photonics by developing the world’s first fast photonic circuit in a Lithium Niobate platform designed to manipulate polarization-entangled photons, and fully integrate a quantum dot on the photonic chip.
Fields of science (EuroSciVoc)
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.
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.
- natural sciences physical sciences quantum physics
- natural sciences chemical sciences inorganic chemistry alkali metals
- social sciences political sciences political transitions revolutions
- natural sciences physical sciences electromagnetism and electronics semiconductivity
- natural sciences physical sciences theoretical physics particle physics photons
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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
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.
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
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2022-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.
33098 Paderborn
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.