Objective
Hybrid platforms, composed of diverse physical components, are key for studying new phenomena and devices as they combine complementary functionalities. One notable example is cavity quantum electrodynamics (2012 Physics Nobel Prize), where an atom is coupled to a photon localised in a cavity. In condensed matter physics, semiconductor-superconductor devices represent an intriguing hybrid system. Semiconductors form the backbone of modern technology, while superconductors serve as a natural source of entanglement. Cooper pairs, the fundamental mechanism that enables superconductivity, were first suggested in 1956. Surprisingly, to date, there has been no direct measurement of their maximally entangled singlet character, and despite the tremendous potential of s-wave superconductors for spin entanglement, long-coherence spin-based hybrid semiconductor-superconductor devices are largely unexplored. The SPINSWAP project aims to study this class of devices using Germanium quantum wells.
There have been significant, recent advances in Germanium in terms of material quality, proximity-induced superconductivity, and spin coherence. The PI’s group has played an instrumental role by realising the first Ge spin qubit, as well as the largest hard superconducting gap in planar Ge reported to date. In SPINSWAP, we will create the first p-type Cooper pair splitters, demonstrate the singlet nature of Cooper pairs, and use them to create a solid-state source for generating entangled spins on demand. Furthermore, for the first time, we will enable all-electric entanglement swapping between spins belonging to different Cooper pairs. Through sequential swapping experiments, entanglement will be distributed beyond two spins in a two-dimensional geometry, and its potential as a multipartite resource will be explored. Such multipartite entanglement is significant beyond error-correction, including measurement-based quantum computing and fundamental tests of quantum mechanics.
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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.1.1 - European Research Council (ERC)
MAIN PROGRAMME
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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-ERC - HORIZON ERC Grants
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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) ERC-2025-ADG
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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.
3400 Klosterneuburg
Austria
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.