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Quantum Dot-based low-power microwave devices and circuits

Objective

Quantum dots (QDs), nanosystems so small that their size determines their properties, have revolutionised fields as diverse as light emission, photovoltaics, and biomedicine, primarily by exploiting their optical properties. QDs have, as well, extraordinary electrical properties that have placed them at the forefront of quantum information processing technologies, as hosts of semiconductor spin qubits. To operate, spins qubits necessitate deep cryogenic temperatures, and high frequency analog signals, typically delivered from room temperature. To advance towards scalable integrated quantum computing systems, cryogenic electronics are needed but the high power dissipated by these circuits have prevented tighter integration.
QuDos is the high-risk high-reward answer to this challenge, that bases its core programme on the hypothesis that the same embodiment for spin-qubit, QDs, could be utilized to demonstrate revolutionary new devices for cryogenic low-power analog applications. Particularly, QuDos will exploit, for the first time, the dissipationless high-frequency non-linear admittance of QDs, the quantum capacitance, to deliver stand-alone low-power analog circuits for the control and readout of solid-state quantum devices, as well as demonstrate that an integrated quantum-classical readout chain based on semiconductor QDs can be constructed.
The vision of QuDos sits on four main pillars: (i) Exploit the quantum capacitance of semiconductor QDs to demonstrate novel analog devices with superior performance to classical systems, (ii) Explore the fundamental physics of QDs at high frequency leading to new electronic device properties, (iii) Demonstrate an integrated low-power QD-based architecture for quantum state readout including qubits and the analog front end and (iv) Develop a simulation framework for hybrid QDs circuits at microwave frequencies. The research carried in QuDos will lay the foundation for a paradigm shift in information processing with QD tech.

Keywords

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Programme(s)

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Topic(s)

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Funding Scheme

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HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

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(opens in new window) ERC-2025-COG

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Host institution

CUANTOMOCION SL
Net EU contribution

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.

€ 1 359 221,25
Address
PLAZA GIPUZKOA 16, ENTLO DCHA
20004 Donostia
Spain

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SME

The organization defined itself as SME (small and medium-sized enterprise) at the time the Grant Agreement was signed.

Yes
Region
Noreste País Vasco Gipuzkoa
Activity type
Private for-profit entities (excluding Higher or Secondary Education Establishments)
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Total cost

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.

€ 1 770 062,81

Beneficiaries (2)