Project description
Novel integrated nanosystem could help investigate quantum effects in large, visible systems
Understanding the boundary between classical and quantum physics is a major challenge for scientists. Creating non-classical states in macroscopic mechanical oscillators offers a way of exploring this connection. These states could also be used as quantum memories in quantum information experiments. However, achieving strong coupling between spins and mechanical oscillators has only been achieved in gigahertz-frequency mechanical oscillators coupled to superconducting qubits. With the support of the Marie Skłodowska-Curie Actions programme, the SMESC project will combine nitrogen-vacancy centres in diamond, which offer long coherence times and a large optical transition, with high-sensitivity silicon carbide nanowires. By building a cryogenic platform that links these components, researchers should help achieve strong coupling and demonstrate single-shot spin state readout.
Objective
The ability to prepare a macroscopic mechanical oscillator in a non classical state would have dramatic implications, both at the fundamental level, by upgrading our knowledge of the boundary between classical and quantum physics, and on a more applied point of view, by using the potentially long coherence time of state of the art mechanical oscillators as quantum memories in a quantum information experiment. If alternatives exist, the direct coupling of a spin platform to a mechanical oscillator is one of the most advanced route to reach such milestone. So far, the strong coupling regime, characterized by a spin mechanical exchange rate above both the mechanical and the spin decoherence rates, has not been attained except in GigaHertz frequency mechanical oscillators coupled to superconducting qubits.
Among spin platforms, Nitrogen Vacancy centers in diamond offer very long coherence times and a large optical transition. Immersed in a strong magnetic gradient bias, their energy splitting depends on their position, creating the spin-mechanical interface.
Among mechanical oscillators, silicon carbide nanowires offer very low masses and therefore an extremely high force sensitivity, which is of prior interest to measure the very low force induced by a single spin flip to a magnet attached to its tip.
Spin MEchanics in the Strong Coupling (SMESC) will build a cryogenic spin mechanical coupling platform with a NV center host and a silicon carbide nanowire functionalized with a nanomagnet. It will demonstrate the first operation of such platform in the strong coupling regime by performing a single shot readout of the spin state by reading the position of the mechanical oscillator.
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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Keywords
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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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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75794 Paris
France
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