Výsledky vyhledávání - "Benoît Douçot"

Akademický článek

Topological dynamics of adiabatic cat states

Autor: Jacquelin Luneau, Benoît Douçot, David Carpentier

Publikováno v: SciPost Physics, Vol 17, Iss 4, p 112 (2024)

We consider a quantum topological frequency converter, realized by coupling a qubit to two slow harmonic modes. The dynamics of such a system is the quantum analog of topological pumping. Our quantum mechanical description shows that an initial state

Externí odkaz: https://doaj.org/article/23adae1792e04c2da7163907759f86ed

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Driven Andreev molecule

Autor: Andriani Keliri, Benoît Douçot

We study the three terminal S-QD-S-QD-S Josephson junction biased with commensurate voltages. In the absence of an applied voltage, the Andreev bound states on each quantum dot hybridize forming an `Andreev molecule'. However, understanding of this s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::026e44040fb072ee796792346f450c93
http://arxiv.org/abs/2208.11541

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Linear-in-

T

resistivity from semiholographic non-Fermi liquid models

Autor: Giuseppe Policastro, Benoît Douçot, Sutapa Samanta, Ayan Mukhopadhyay

Publikováno v: Physical Review
Phys.Rev.D
Phys.Rev.D, 2021, 104 (8), pp.L081901. ⟨10.1103/PhysRevD.104.L081901⟩

We construct a semiholographic effective theory in which the electron of a two-dimensional band hybridizes with a fermionic operator of a critical holographic sector, while also interacting with other bands that preserve quasiparticle characteristics

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a36407fa0859e30da7f28370d6aba22
http://repo.scoap3.org/api

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Inversion in a four terminal superconducting device on the quartet line: II. Quantum dot and Floquet theory

Autor: Régis Mélin, Benoît Douçot

Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2020, 102 (24), pp.245436. ⟨10.1103/PhysRevB.102.245436⟩

In this paper, we consider a quantum dot connected to four superconducting terminals biased at opposite voltages on the quartet line. The grounded superconductor contains a loop threaded by the magnetic flux $\Phi$. We provide Keldysh microscopic cal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::956c1c2094f81222bed0da1e125a8ba0
https://hal.archives-ouvertes.fr/hal-03084488

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Collective excitations of quantum Hall states under tilted magnetic field

Autor: Kang Yang, Benoît Douçot, Mark Oliver Goerbig

Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2020, 102 (4), pp.045145. ⟨10.1103/PhysRevB.102.045145⟩

International audience; We study the neutral excitations of fractional quantum Hall states in electronic systems of finite width where an external anisotropy is introduced by tilting the magnetic field. As in the isotropic case, the neutral collectiv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e807e16498ae2d7b7b651bafb22cde8
http://arxiv.org/abs/2004.11872

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Josephson ladders as a model system for 1D quantum phase transitions

Autor: Aleksandra Petković, Michael Gershenson, Lev Ioffe, Benoît Douçot, Matthew Bell

Publikováno v: Comptes Rendus Physique. 19:484-497

We propose a novel platform for the study of quantum phase transitions in one dimension (1D QPT). The system consists of a specially designed chain of asymmetric SQUIDs; each SQUID contains several Josephson junctions with one junction shared between

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bb42a98b31443220883559e2b4b8858
https://doi.org/10.1016/j.crhy.2018.09.002

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Berry phase in superconducting multiterminal quantum dots

Autor: Romain Danneau, Jean-Guy Caputo, Régis Mélin, Kang Yang, Benoît Douçot

Publikováno v: Physical review / B, 101 (3), Art.-Nr. 035411
Physical Review B
Physical Review B, American Physical Society, 2020, 101 (3), pp.035411. ⟨10.1103/PhysRevB.101.035411⟩

We report on the study of the non-trivial Berry phase in superconducting multiterminal quantum dots biased at commensurate voltages. Starting with the time-periodic Bogoliubov-de Gennes equations, we obtain a tight binding model in the Floquet space,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3409b81fc5ff3a81309a30b3d71cb44
http://arxiv.org/abs/1904.03132

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Engineering the Floquet spectrum of superconducting multiterminal quantum dots

Autor: Kang Yang, Romain Danneau, Régis Mélin, Jean-Guy Caputo, Benoît Douçot

Publikováno v: Physical Review B
Physical Review B, American Physical Society, 2019, 100 (3), pp.035450. ⟨10.1103/PhysRevB.100.035450⟩
Physical review / B, 100 (3), Art. Nr.: 035450

Here we present a theoretical investigation of the Floquet spectrum in multiterminal quantum dot Josephson junctions biased with commensurate voltages. We first draw an analogy between the electronic band theory and superconductivity which enlightens

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Zero point fluctuations for magnetic spirals and Skyrmions, and the fate of the Casimir energy in the continuum limit

Autor: Roderich Moessner, Dmitry L. Kovrizhin, Benoît Douçot

Publikováno v: Annals of Physics
Annals Phys.
Annals Phys., 2018, 399, pp.239-257. ⟨10.1016/j.aop.2018.10.008⟩

We study the role of zero-point quantum fluctuations in a range of magnetic states which on the classical level are close to spin-aligned ferromagnets. These include Skyrmion textures characterized by non-zero topological charge, and topologically-tr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::768241a4eff8a0184051b597014b42f0
https://hdl.handle.net/21.11116/0000-0002-DE5C-E21.11116/0000-0003-D35E-6

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Semiclassical approach to quantum spin ice

Autor: Claudio Castelnovo, Benoît Douçot, Michal Kwasigroch

Publikováno v: Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2017, 95 (13), pp.134439. ⟨10.1103/PhysRevB.95.134439⟩
Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 95 (13), pp.134439. ⟨10.1103/PhysRevB.95.134439⟩

We propose a semi-classical description of the low-energy properties of quantum spin ice in the strong Ising limit. Within the framework of a semiclassical, perturbative Villain expansion, that can be truncated at arbitrary order, we give an analytic

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