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QuDeT SIGNED

Quantum devices in topological matter: carbon nanotubes, graphene, and novel superfluids

Total Cost €

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EC-Contrib. €

0

Partnership

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 QuDeT project word cloud

Explore the words cloud of the QuDeT project. It provides you a very rough idea of what is the project "QuDeT" about.

3he    helium    refrigeration    reaching    superfluid    interactions    topological    thin    mk    ultrasensitive    biased    hybrid    relies    object    optomechanics    walled    nuclear    ensembles    immersed    carbon    single    pairing    suspended    drastically    superconductivity    vacuum    modified    oscillator    layer    objects    metastable    introducing    nitride    temperature    gate    swnt    condensates    graphite    anharmonic    interfaces    extraordinary    trivial    atomic    adiabatic    ground    resonator    circuit    materials    graphene    facilitates    interacting    formed    reached    boron    misfit    fock    defects    substrate    excitonic    nanomechanical    quality    cavity    swnts    superfluidity    linear    intriguingly    layers    dislocation    cooled    origin    microwave    quantum    interface    phases    look    nanotubes    gt    acts    proximity    provides    mechanical    sheets    immersion    resonators    below    mesoscopic    cooling    phonon    deduce    coupling    minimum    hopg    besides    motion    probed    supercurrents    voltage    macroscopic    detectors    tunnelling    limit   

Project "QuDeT" data sheet

The following table provides information about the project.

Coordinator
AALTO KORKEAKOULUSAATIO SR 

Organization address
address: OTAKAARI 1
city: ESPOO
postcode: 2150
website: http://www.aalto.fi/en/

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
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 Coordinator Country Finland [FI]
 Total cost 2˙398˙536 €
 EC max contribution 2˙398˙536 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-ADG
 Funding Scheme ERC-ADG
 Starting year 2016
 Duration (year-month-day) from 2016-01-01   to  2020-12-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    AALTO KORKEAKOULUSAATIO SR FI (ESPOO) coordinator 2˙398˙536.00

Map

 Project objective

The project addresses quantum devices in hybrid systems formed using carbon nanotubes, graphene, and 3He superfluid, all with particular topological characteristics. Topological properties of these non-trivial materials can be drastically modified by introducing defects or interfaces into them, like single layer graphene into superfluid helium, boron nitride between graphene sheets, carbon nanotubes in 3He superfluid, or misfit dislocation layers into HOPG graphite.

We are particularly interested in graphene/3He systems where graphene acts as an interface/substrate of interacting atomic ensembles. The atomic interactions across graphene are expected to provide novel mesoscopic condensates. By studying the topological phases of thin 3He layers and graphene immersed into superfluid 3He, we will investigate pairing across the graphene interface, deduce the origin of supercurrents, and look for excitonic superfluidity in these systems.

Single walled carbon nanotubes provide high-quality nanomechanical resonators with extraordinary properties. By using proximity-induced superconductivity, these objects will be integrated into circuit optomechanics in a way that facilitates strong coupling between the mechanical motion and the microwave cavity. By using adiabatic nuclear refrigeration, these non-linear quantum objects will be cooled below 1 mK, at the temperature of which the quantum ground state is reached. The cooling relies on immersion of the SWNT into superfluid 3He which, in the limit T -> 0, provides a quantum vacuum with unique topological properties. Intriguingly, the characteristics of this vacuum can be probed by ultrasensitive detectors provided by the suspended SWNTs.

Finally, besides non-classical phonon states, e.g. Fock states in the mechanical resonator, reaching the ground state of such an anharmonic oscillator will allow studies of quantum tunnelling of a macroscopic object from its metastable minimum when biased with a large gate voltage.

 Publications

year authors and title journal last update
List of publications.
2017 Teemu Elo, Pasi Lähteenmäki, Dmitri Golubev, Alexander Savin, Konstantin Arutyunov, Pertti Hakonen
Thermal Relaxation in Titanium Nanowires: Signatures of Inelastic Electron-Boundary Scattering in Heat Transfer
published pages: 204-216, ISSN: 0022-2291, DOI: 10.1007/s10909-017-1802-2
Journal of Low Temperature Physics 189/3-4 2019-09-30
2018 Antti Laitinen, Manohar Kumar, Pertti Hakonen, Edouard Sonin
Gyrotropic Zener tunneling and nonlinear IV curves in the zero-energy Landau level of graphene in a strong magnetic field
published pages: , ISSN: 2045-2322, DOI: 10.1038/s41598-017-18959-7
Scientific Reports 8/1 2019-09-30
2018 Antti Laitinen, Manohar Kumar, Teemu Elo, Ying Liu, T. S. Abhilash, Pertti J. Hakonen
Breakdown of Zero-Energy Quantum Hall State in Graphene in the Light of Current Fluctuations and Shot Noise
published pages: 272-287, ISSN: 0022-2291, DOI: 10.1007/s10909-018-1855-x
Journal of Low Temperature Physics 191/5-6 2019-09-30
2018 Antti Laitinen, Manohar Kumar, Pertti J. Hakonen
Weak antilocalization of composite fermions in graphene
published pages: 75113, ISSN: 2469-9950, DOI: 10.1103/PhysRevB.97.075113
Physical Review B 97/7 2019-09-30
2018 I. Todoshchenko
Finite-size effects in thermodynamics: Negative compressibility and global instability in two-phase systems
published pages: 134101, ISSN: 2469-9950, DOI: 10.1103/PhysRevB.97.134101
Physical Review B 97/13 2019-09-30
2018 Manohar Kumar, Antti Laitinen, Pertti Hakonen
Unconventional fractional quantum Hall states and Wigner crystallization in suspended Corbino graphene
published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-018-05094-8
Nature Communications 9/1 2019-09-30
2018 V. V. Zavjalov, A. M. Savin, P. J. Hakonen
Cryogenic Differential Amplifier for NMR Applications
published pages: , ISSN: 0022-2291, DOI: 10.1007/s10909-018-02130-1
Journal of Low Temperature Physics 2019-09-30

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