Project description
Scaling quantum spin simulations with hybrid photonic-defect devices
Quantum simulators promise to solve problems beyond the reach of classical computers. Scaling them to practically useful sizes remains a fundamental engineering challenge. Silicon vacancy defects in silicon carbide are among the most promising spin-qubit building blocks. Expanding multiple coupled spins around a single colour centre to multiple colour centres has been hindered by signal overlap and control limitations. With the support of the Marie Skłodowska-Curie Actions programme, the INSPIRES project aims to overcome this. It will develop a hybrid device integrating defect-containing silicon carbide with silicon nitride. This could enable site-selective control and tuning of multiple colour centres to distinct frequencies in an interconnected spin chain scalable to thousands of spins.
Objective
Quantum simulation using qubits offers methods to modeling systems intractable for classical computation. Among many spin qubits, silicon vacancies (V2) in silicon carbide (SiC) stand out for their lifetime-limited linewidth in nanostrucutres, scalable foundry-ready fabrication, and potentials for CMOS compatibility. While recent works showed the potential to map a network of 50 coupled spins around a single color center, this method reached its scaling limit. Next step is to couple multiple color centers, but it presents a significant challenge from signal crowding and overlap.
This project addresses this bottleneck by developing a hybrid device. It is designed to provide multi-dimensional tuning (via Stark, strain, and magnetic field), enabling site-selective control and individual addressing of multiple color centers. I will exploit mature silicon nitride (Si3N4) platform for tuning electrodes and photonic circuits, then heterogeneously integrate defect-containing SiC structures on. This architecture will retain color center performance, provide targeted control, diminish noises, and enhance signal collection, thereby realizing an interconnected spin chain system scalable of 1000s of spins.
The project will proceed in three key stages. First, I will conduct a theoretical optimization study of the device. Next, I will fabricate a heterogeneous Si3N4/SiC device. Finally, I will demonstrate the formation of interconnected spin chains by tuning multiple color centers to distinct frequencies, then measuring their coupling matrix and many-spin dynamics. This research will accelerate quantum simulations with unprecedented number of qubits.
I will leverage my expertise in photonics, fabrication, electrical and cryogenic engineering and collaborate with leading and interdisciplinary experts in both of my host groups at QuTech. This fellowship will enhance my scientific and transferable skills, foster pioneering work in quantum simulation and enable further collaborations.
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.
- engineering and technology materials engineering colors
- natural sciences chemical sciences inorganic chemistry inorganic compounds
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering computer hardware quantum computers
- natural sciences chemical sciences inorganic chemistry metalloids
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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)
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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.
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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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(opens in new window) HORIZON-MSCA-2025-PF
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2628 CN Delft
Netherlands
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