Université de Sherbrooke

output

19922026

most citedPractical Bayesian Optimization of Machine Learning Algorithms

5.7k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2021Show all

85 papers · 1 filter

quant-ph2021★ 15 cited

Collective bosonic effects in an array of transmon devices

Tuure Orell, Maximilian Zanner, Mathieu L. Juan +5

Multiple emitters coherently interacting with an electromagnetic mode give rise to collective effects such as correlated decay and coherent exchange interaction, depending on the s…

quant-ph2021★ 698 cited

Realizing Repeated Quantum Error Correction in a Distance-Three Surface Code

Sebastian Krinner, Nathan Lacroix, Ants Remm +13

Quantum computers hold the promise of solving computational problems which are intractable using conventional methods. For fault-tolerant operation quantum computers must correct e…

q-fin.GN2021★ 11 cited

Thirty Years of Academic Finance

David Ardia, Keven Bluteau, Mohammad Abbas Meghani

We study how the financial literature has evolved in scale, research team composition, and article topicality across 32 finance-focused academic journals from 1992 to 2021. We docu…

quant-ph2021★ 3 cited

Simulating quantum circuits using the multi-scale entanglement renormalization ansatz

I. A. Luchnikov, A. V. Berezutskii, A. K. Fedorov

Understanding the limiting capabilities of classical methods in simulating complex quantum systems is of paramount importance for quantum technologies. Although many advanced appro…

cond-mat.supr-con2021★ 22 cited

Thermal Hall conductivity of electron-doped cuprates

Marie-Eve Boulanger, Gaël Grissonnanche, Étienne Lefrançois +5

Measurements of the thermal Hall conductivity in hole-doped cuprates have shown that phonons acquire chirality in a magnetic field, both in the pseudogap phase and in the Mott insu…

math.AT2021★ 17 cited

Homological approximations in persistence theory

Benjamin Blanchette, Thomas Brüstle, Eric J. Hanson

We define a class of invariants, which we call homological invariants, for persistence modules over a finite poset. Informally, a homological invariant is one that respects some ho…

cond-mat.dis-nn2021★ 12 cited

Entanglement phase transition with spin glass criticality

Jeremy Côté, Stefanos Kourtis

We define an ensemble of random Clifford quantum circuits whose output state undergoes an entanglement phase transition between two volume-law phases as a function of measurement r…

eess.IV2021★ 2 cited

Echocardiography Segmentation with Enforced Temporal Consistency

Nathan Painchaud, Nicolas Duchateau, Olivier Bernard +1

Convolutional neural networks (CNN) have demonstrated their ability to segment 2D cardiac ultrasound images. However, despite recent successes according to which the intra-observer…

cond-mat.str-el2021★ 25 cited

Doping phase diagram of a Hubbard model for twisted bilayer cuprates

Xiancong Lu, David Sénéchal

We study the twisted Hubbard model of a cuprate bilayer at a fixed twist angle $θ = 53.1 3^{\circ}$ using the variational cluster approximation, a method that treats short-range dynam…

eess.AS2021★ 41 cited

Speech Prediction using an Adaptive Recurrent Neural Network with Application to Packet Loss Concealment

Reza Lotfidereshgi, Philippe Gournay

This paper proposes a novel approach for speech signal prediction based on a recurrent neural network (RNN). Unlike existing RNN-based predictors, which operate on parametric featu…

eess.AS2021★ 57 cited

Biologically inspired speech emotion recognition

Reza Lotfidereshgi, Philippe Gournay

Conventional feature-based classification methods do not apply well to automatic recognition of speech emotions, mostly because the precise set of spectral and prosodic features th…

cond-mat.str-el2021★ 8 cited

Resilient Fermi liquid and strength of correlations near an antiferromagnetic quantum critical point

C. Gauvin-Ndiaye, M. Setrakian, A. -M. S. Tremblay

Near the antiferromagnetic quantum critical point (QCP) of electron-doped cuprate superconductors, angle-resolved photoemission experiments detect hot spots where the Fermi surface…

cond-mat.mes-hall2021

Electron g-factor determined for quantum dot circuit fabricated from (110)-oriented GaAs quantum well

T. Nakagawa, S. Lamoureux, T. Fujita +8

The choice of substrate orientation for semiconductor quantum dot circuits offers opportunities for tailoring spintronic properties such as g-factors for specific functionality. In…

cond-mat.mtrl-sci2021★ 72 cited

Anomalous thermoelectric effects and quantum oscillations in the kagome metal CsV $_{3}$ Sb $_{5}$

Dong Chen, Bin He, Mengyu Yao +7

The kagome metal compounds $A$ V $_{3}$ Sb $_{5}$ ( $A$ = K, Rb, and Cs) feature a wealth of phenomena including nontrivial band topology, charge density wave (CDW), and superconductivity.…

cond-mat.str-el2021★ 98 cited

Evidence of a Phonon Hall Effect in the Kitaev Spin Liquid Candidate $α$ -RuCl $_{3}$

É. Lefrançois, G. Grissonnanche, J. Baglo +9

The material $α$ -RuCl $_{3}$ has been the subject of intense scrutiny as a potential Kitaev quantum spin liquid, predicted to display Majorana fermions as low energy excitations. In p…

cond-mat.mtrl-sci2021★ 16 cited

Prediction of Large Magnetic Moment Materials With Graph Neural Networks and Random Forests

Sékou-Oumar Kaba, Benjamin Groleau-Paré, Marc-Antoine Gauthier +3

Magnetic materials are crucial components of many technologies that could drive the ecological transition, including electric motors, wind turbine generators and magnetic refrigera…

math.DS2021★ 3 cited

Dynamics on nilpotent character varieties

Jean-Philippe Burelle, Sean Lawton

Let R(N,G) be the connected component of the identity of the variety of representations of a finitely generated nilpotent group N into a connected compact Lie group G, and let X(N,…

cond-mat.str-el2021★ 3 cited

Brane order and quantum magnetism in modulated anisotropic ladders

Toplal Pandey, Gennady Y. Chitov

Two-leg spin- $\frac{1}{2}$ ladders with anisotropy and two different dimerization patterns are analyzed at zero temperature. This model is equivalent to a modulated interacting (Kitaev…

cond-mat.str-el2021★ 56 cited

Large Phonon Thermal Hall Conductivity in a Simple Antiferromagnetic Insulator

Lu Chen, Marie-Eve Boulanger, Zhi-Cheng Wang +2

Phonons are known to generate a thermal Hall effect in certain insulators, including oxides with rare-earth impurities, quantum paraelectrics, multiferroic materials and cuprate Mo…

gr-qc2021★ 1 cited

The curious case of the Buchdahl-Land-Sultana-Wyman-Ibañez-Sanz spacetime

Valerio Faraoni, Sonia Jose, Alexandre Leblanc

We revisit Wyman's "other" scalar field solution of the Einstein equations and its Sultana generalization to positive cosmological constant, which has a finite 3-space and correspo…

stat.ML2021★ 23 cited

The R package sentometrics to compute, aggregate and predict with textual sentiment

David Ardia, Keven Bluteau, Samuel Borms +1

We provide a hands-on introduction to optimized textual sentiment indexation using the R package sentometrics. Textual sentiment analysis is increasingly used to unlock the potenti…

q-fin.GN2021★ 28 cited

Media abnormal tone, earnings announcements, and the stock market

David Ardia, Keven Bluteau, Kris Boudt

We conduct a tone-based event study to examine the aggregate abnormal tone dynamics in media articles around earnings announcements. We test whether they convey incremental informa…