Objective
One major quest in physics is to extend quantum superposition states from the microscopic to the macroscopic world. To achieve this, we need to explore innovative approaches for synthesizing macroscopic quantum superpositions of massive objects. While recent advancements have demonstrated quantum non-Gaussian states of motion in mechanical oscillators, the delocalization achieved has been only marginally larger than the zero-point motion. QTube aims to address this limitation by quantum delocalizing a nanotube mechanical resonator, an object composed of approximately 106 atoms, to a length scale greater than its diameter.
QTube will tackle several key challenges with significant scientific impact: (i) developing a nanotube double quantum dot qubit with record-breaking coherence rate; (ii) detecting the mechanical vibrations of the nanotube in the quantum ground state using a quantum nondemolition approach with a superconducting resonator (iii) observing quantum jumps of phonons, an unprecedented milestone in quantum physics; (iv) demonstrating, for the first time, a double-well potential for nanomechanical vibrations, thereby entering an extreme regime in nonlinear mechanics; and (v) synthesizing a macroscopic quantum superposition of a nanotube. This macroscopic quantum superposition will be achieved by utilizing a novel squeezing protocol with the double-well potential to enhance the anti-squeezed quadrature without parametric drive and create Wigner negativity when the anti-squeezed quadrature is large. The double quantum dot qubit will certify the macroscopic quantum superposition state through Wigner tomography.
If successful, QTube will extend the frontier of macroscopic quantum superposition states and unlock new possibilities in macroscopic quantum tunneling, precise quantum sensing of forces, and entanglement between mechanical systems.
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 electrical engineering, electronic engineering, information engineering electronic engineering computer hardware quantum computers
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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)
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.
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-2024-ADG
See all projects funded under this callHost institution
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.
08860 Castelldefels
Spain
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.