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View article: Ballistic-to-diffusive transition in engineered counterpropagating quantum Hall channels
Ballistic-to-diffusive transition in engineered counterpropagating quantum Hall channels Open
Exotic quantum Hall systems hosting counterpropagating edge states can show seemingly nonuniversal transport regimes, usually depending on the size of the sample. We experimentally probe transport in a quantum Hall sample engineered to hos…
View article: Breakdown of the Wiedemann-Franz law in an interacting quantum Hall metamaterial
Breakdown of the Wiedemann-Franz law in an interacting quantum Hall metamaterial Open
Quantum heat transport by electrons in ballistic channels is usually well-described in the Landauer-Büttiker framework, which fails when introducing strong Coulomb interactions. We theoretically show that a chain of small metallic dots whe…
View article: Non-universal localization transition in the quantum Hall effect probed through broken-symmetry states of graphene
Non-universal localization transition in the quantum Hall effect probed through broken-symmetry states of graphene Open
The quantum Hall effect hosts quantum phase transitions in which the localization length, that is the size of disorder-induced bulk localized states, is governed by universal scaling from percolation theory. However, this universal charact…
View article: Non-Ohmic to Ohmic crossover in the breakdown of the quantum Hall states in graphene under broadband excitations
Non-Ohmic to Ohmic crossover in the breakdown of the quantum Hall states in graphene under broadband excitations Open
Here we upload the raw data from the manuscript entitled “Non-Ohmic to Ohmic crossover in the breakdown of the quantum Hall states in graphene under broadband excitations ”, by Torsten Röper, Aifei Zhang, Kenji Watanabe, Takashi Taniguchi,…
View article: Roadmap on Quantum Thermodynamics
Roadmap on Quantum Thermodynamics Open
The last two decades has seen quantum thermodynamics become a well established field of research in its own right. In that time, it has demonstrated a remarkably broad applicability, ranging from providing foundational advances in the unde…
View article: Enhanced shot noise in graphene quantum point contacts with electrostatic reconstruction
Enhanced shot noise in graphene quantum point contacts with electrostatic reconstruction Open
Shot noise measurements in quantum point contacts are a powerful tool to investigate charge transport in the integer and fractional quantum Hall regime, in particular to unveil the charge, quantum statistics and tunneling dynamics of edge …
View article: Vanishing bulk heat flow in the ν = 0 quantum Hall ferromagnet in monolayer graphene
Vanishing bulk heat flow in the ν = 0 quantum Hall ferromagnet in monolayer graphene Open
View article: Author Correction: Quasiparticle Andreev scattering in the ν = 1/3 fractional quantum Hall regime
Author Correction: Quasiparticle Andreev scattering in the ν = 1/3 fractional quantum Hall regime Open
View article: Bolometric detection of Josephson inductance in a highly resistive environment
Bolometric detection of Josephson inductance in a highly resistive environment Open
View article: Quasiparticle Andreev Scattering in the nu=1/3 Fractional Quantum Hall Regime
Quasiparticle Andreev Scattering in the nu=1/3 Fractional Quantum Hall Regime Open
Raw measurements, analysis codes and plotted data for P. Glidic et al., "Quasiparticle Andreev Scattering in the nu=1/3 Fractional Quantum Hall Regime", Nature Communications 14, 514 (2023); arXiv:2206.08068. The "RawDataAnalysis" folder i…
View article: On the link between mechanics and thermal properties: mechanothermics
On the link between mechanics and thermal properties: mechanothermics Open
We report on the theoretical derivation of macroscopic thermal properties (specific heat, thermal conductivity) of an electrically insulating rod connected to two reservoirs, from the linear superposition of its mechanical mode Brownian mo…
View article: Cross-Correlation Investigation of Anyon Statistics in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ν</mml:mi><mml:mo>=</mml:mo><mml:mn>1</mml:mn><mml:mo>/</mml:mo><mml:mn>3</mml:mn></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>2</mml:mn><mml:mo>/</mml:mo><mml:mn>5</mml:mn></mml:math> Fractional Quantum Hall States
Cross-Correlation Investigation of Anyon Statistics in the and Fractional Quantum Hall States Open
International audience
View article: Nanomechanical damping via electron-assisted relaxation of two-level systems
Nanomechanical damping via electron-assisted relaxation of two-level systems Open
We report on measurements of dissipation and frequency noise at millikelvin temperatures of nanomechanical devices covered with aluminum. A clear excess damping is observed after switching the metallic layer from superconducting to the nor…
View article: Quasiparticle Andreev scattering in the ν = 1/3 fractional quantum Hall regime
Quasiparticle Andreev scattering in the ν = 1/3 fractional quantum Hall regime Open
The scattering of exotic quasiparticles may follow different rules than electrons. In the fractional quantum Hall regime, a quantum point contact (QPC) provides a source of quasiparticles with field effect selectable charges and statistics…
View article: On the link between mechanics and thermal properties: mechanothermics
On the link between mechanics and thermal properties: mechanothermics Open
We report on the theoretical derivation of macroscopic thermal properties (specific heat, thermal conductivity) of an electrically insulating rod connected to two reservoirs, from the linear superposition of its mechanical mode Brownian mo…
View article: Bolometric detection of Josephson inductance in a highly resistive environment
Bolometric detection of Josephson inductance in a highly resistive environment Open
The Josephson junction is a building block of quantum circuits. Its behavior, well understood when treated as an isolated entity, is strongly affected by coupling to an electromagnetic environment. In 1983, Schmid predicted that a Josephso…
View article: Thermodynamics of Gambling Demons
Thermodynamics of Gambling Demons Open
We introduce and realize demons that follow a customary gambling strategy to stop a nonequilibrium process at stochastic times. We derive second-law-like inequalities for the average work done in the presence of gambling, and universal sto…
View article: Quantifying the quantum heat contribution from a driven superconducting circuit
Quantifying the quantum heat contribution from a driven superconducting circuit Open
Heat flow management at the nanoscale is of great importance for emergent quantum technologies. For instance, a thermal sink that can be activated on-demand is a highly desirable tool that may accommodate the need to evacuate excess heat a…
View article: Nanomechanical damping via electron-assisted relaxation of two-level\n systems
Nanomechanical damping via electron-assisted relaxation of two-level\n systems Open
We report on measurements of dissipation and frequency noise at millikelvin\ntemperatures of nanomechanical devices covered with aluminum. A clear excess\ndamping is observed after switching the metallic layer from superconducting to\nthe …
View article: Electric field control of radiative heat transfer in a superconducting circuit
Electric field control of radiative heat transfer in a superconducting circuit Open
View article: Detecting a phonon flux in superfluid <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>4</mml:mn></mml:mmultiscripts></mml:math> by a nanomechanical resonator
Detecting a phonon flux in superfluid by a nanomechanical resonator Open
International audience
View article: A quantum heat switch based on a driven qubit
A quantum heat switch based on a driven qubit Open
Unveiling the impact in thermodynamics of the phenomena specific to quantum mechanics is a crucial step to identify fundamental costs for quantum operations and quantum advantages in heat engines. We propose a two-reservoir setup to detect…
View article: Probing superfluid <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>4</mml:mn></mml:mmultiscripts></mml:math> with high-frequency nanomechanical resonators down to millikelvin temperatures
Probing superfluid with high-frequency nanomechanical resonators down to millikelvin temperatures Open
International audience
View article: Optimal Probabilistic Work Extraction beyond the Free Energy Difference with a Single-Electron Device
Optimal Probabilistic Work Extraction beyond the Free Energy Difference with a Single-Electron Device Open
We experimentally realize protocols that allow us to extract work beyond the free energy difference from a single-electron transistor at the single thermodynamic trajectory level. With two carefully designed out-of-equilibrium driving cycl…
View article: Brute-force cooling and on-chip thermometry for microwave optomechanics
Brute-force cooling and on-chip thermometry for microwave optomechanics Open
We report on microwave optomechanics measurements performed on a nuclear adiabatic demagnetization cryostat, whose temperature is determined by accurate thermometry from below 500$~\mu$K to about 1$~$Kelvin. We describe a method for access…
View article: Driving nanomechanical resonators by phonon flux in superfluid \(\mathbf{^4He}\)
Driving nanomechanical resonators by phonon flux in superfluid \(\mathbf{^4He}\) Open
We report on nanomechanical resonators with very high-quality factors operated as mechanical probes in liquid helium \(^4\mathrm{He}\), with special attention to the superfluid regime down to millikelvin temperatures. Such resonators have …
View article: Optimal probabilistic work extraction beyond the free energy difference with a single-electron device
Optimal probabilistic work extraction beyond the free energy difference with a single-electron device Open
We experimentally realize protocols that allow to extract work beyond the free energy difference from a single electron transistor at the single thermodynamic trajectory level. With two carefully designed out-of-equilibrium driving cycles …
View article: Measuring Frequency Fluctuations in Nonlinear Nanomechanical Resonators
Measuring Frequency Fluctuations in Nonlinear Nanomechanical Resonators Open
Advances in nanomechanics within recent years have demonstrated an always expanding range of devices, from top-down structures to appealing bottom-up MoS2 and graphene membranes, used for both sensing and component-oriented appl…
View article: Processus stochastiques et non-linéaires dans les systèmes nano-électro-mécaniques
Processus stochastiques et non-linéaires dans les systèmes nano-électro-mécaniques Open
In this thesis we address cryogenic nano-electro-mechanical systems (NEMS) from 30 mK to 30 K sensitive to conditions involving fluctuations or disorder. The fundamental aspects studied are ubiquitous in NEMS physics, and for some of them …
View article: Surface-Induced Near-Field Scaling in the Knudsen Layer of a Rarefied Gas
Surface-Induced Near-Field Scaling in the Knudsen Layer of a Rarefied Gas Open
We report on experiments performed within the Knudsen boundary layer of a low-pressure gas. The noninvasive probe we use is a suspended nanoelectromechanical string, which interacts with ^{4}He gas at cryogenic temperatures. When the press…