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Vibrating carbon nanotubes for probing quantum systems at the mesoscale

Project description

Investigating quantum phenomena at the mesoscale

The mesoscopic scale spans the boundary between the macroscopic and microscopic realms, where classical and quantum physics hold sway, respectively. Many fascinating quantum phenomena can emerge at the mesoscopic scale. The EU-funded MesoPhone project will use vibrating carbon nanotubes to probe quantum phenomena at the mesoscopic scale. Nanotubes are ideal for experimental investigations in this region as they can be isolated from thermal noise and be deflected by tiny forces. Moreover, because of their small size, their behaviour is significantly affected by quantum jitter. The project's results could help resolve longstanding questions in physics, such as whether a moving object that contains millions of particles could exist in a superposition of states.

Objective

Many fascinating quantum behaviours occur on a scale that is intermediate between individual particles and large ensembles. It is on this mesoscopic scale that collective properties, including quantum decoherence, start to emerge.
This project will use vibrating carbon nanotubes like guitar strings just a micrometre long as mechanical probes in this intermediate regime. Nanotubes are ideal to explore this region experimentally, because they can be isolated from thermal noise; they are deflected by tiny forces; and they are small enough that quantum jitter significantly affects their behaviour. To take advantage of these properties, I will integrate nanotube resonators into electromechanical circuits that allow sensitive measurements at very low temperature.
First, I will study the motional decoherence of the nanotube itself, by using it as the test particle in a new kind of quantum interferometer. This experiment works by integrating the nanotube into a superconducting qubit, and will represent a test of quantum superposition on a larger mass scale than ever before. It will answer a longstanding question of physics: can a moving object, containing millions of particles, exist in a superposition of states?
Second, I will use the nanotube device as a tool to study superfluid helium 3 the mysterious state of matter that may emulate the interacting quantum fields of the early universe. By measuring an immersed nanotube viscometer, I will be able to measure the behaviour of superfluid excitations on a scale where bulk superfluidity begins to break down.
Third, I will add to the device a nanomagnet on nanotube springs, creating an ultra-sensitive magnetic force sensor. This offers a way to perform nuclear magnetic resonance on a chip, ultimately creating a microscopy tool that could image for example single viruses.

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Keywords

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Programme(s)

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Topic(s)

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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.

ERC-COG - Consolidator Grant

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) ERC-2018-COG

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Host institution

UNIVERSITY OF LANCASTER
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.

€ 2 748 271,00
Address
BAILRIGG
LA1 4YW Lancaster
United Kingdom

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Region
North West (England) Lancashire Lancaster and Wyre
Activity type
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.

€ 2 748 271,00

Beneficiaries (1)

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