Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2k papers
- University of British ColumbiaCA1.9k papers
- McGill UniversityCA1.9k papers
- University of VictoriaCA1.8k papers
- University of California, Santa CruzUS1.7k papers
- Rutherford Appleton LaboratoryGB1.7k papers
- University of ManchesterGB1.7k papers
- Queen Mary University of LondonGB1.7k papers
- University of PisaIT1.6k papers
- University of EdinburghGB1.6k papers
- University of BirminghamGB1.6k papers
- Heidelberg UniversityDE1.6k papers
193 papers · 1 filter
Emulating non-Markovian system-bath dynamics with parametrically driven cavities
Valentin Boettcher, Félix Pellerin, Philippe St-Jean +1
We introduce and characterize a scheme for emulating non-Markovian quantum system-bath dynamics using the discrete electromagnetic field modes of a parametrically driven cavity. In…
Genuine multipartite Rains entanglement
Hailey S. Murray, Sagnik Bhattacharya, M. Cerezo +2
We introduce the genuine multipartite Rains entanglement (GMRE) as a measure of genuine multipartite entanglement that can be computed using semi-definite programming. Similar to t…
The uncharted space of non-Hermitian solutions to the Hartree-Fock and Kohn-Sham equations
Matthias Ernzerhof, Mohamed Loutis, Pierre-Olivier Roy +1
Many problems in physical chemistry involve systems that are coupled to an environment, such as a molecule interacting with an adjacent surface, possibly resulting in meta-stable m…
Neural network enhanced cross entropy benchmark for monitored circuits
Yangrui Hu, Yi Hong Teoh, William Witczak-Krempa +1
We explore the interplay of quantum computing and machine learning to advance experimental protocols for observing measurement-induced phase transitions (MIPT) in quantum devices.…
Separable ellipsoids around multipartite states
Robin Y. Wen, Gilles Parez, Liuke Lyu +2
We show that, in finite dimensions, around any -partite product state , there exists an ellipsoid of separable states centered around $ρ_{\…
Simulating the quantum switch with quantum circuits is computationally hard
Jessica Bavaresco, Hlér Kristjánsson, Mio Murao +4
Higher-order transformations acting on input quantum channels in an indefinite causal order, such as the quantum switch, cannot be described by quantum circuits using the same numb…
Measuring time in a timeless universe
Sam Kuypers, Simone Rijavec
Physical systems are usually assumed to evolve relative to an external time parameter, which is problematic because in quantum theory that parameter is not a physical observable. P…
Long-range multipartite entanglement near measurement-induced transitions
Sebastien J Avakian, T. Pereg-Barnea, William Witczak-Krempa
Measurements profoundly impact quantum systems, and can be used to create novel states of matter out of equilibrium. We investigate the multipartite entanglement structure that eme…
The Fate of Entanglement
Gilles Parez, William Witczak-Krempa
Quantum entanglement manifests itself in non-local correlations between the constituents of a system. In its simplest realization, a measurement on one subsystem is affected by a p…
Temperature as Joules per Bit
Charles Alexandre Bédard, Sophie Berthelette, Xavier Coiteux-Roy +1
In statistical mechanics, entropy is defined as a fundamental quantity. However, its unit, J/K, involves that of temperature, which is only subsequently defined - and defined in te…
Entanglement of free-fermion systems, signal processing and algebraic combinatorics
Pierre-Antoine Bernard, Nicolas Crampé, Rafael I. Nepomechie +2
This paper offers a review of recent studies on the entanglement of free-fermion systems on graphs that take advantage of methods pertaining to signal processing and algebraic comb…
How to Sign Quantum Messages
Mohammed Barhoush, Louis Salvail
Signing quantum messages has long been considered impossible even under computational assumptions. In this work, we challenge this notion and provide three innovative approaches to…
Classically Simulating Quantum Supremacy IQP Circuits through a Random Graph Approach
Julien Codsi, John van de Wetering
Quantum Supremacy is a demonstration of a computation by a quantum computer that can not be performed by the best classical computer in a reasonable time. A well-studied approach t…
Multipartite information of free fermions on Hamming graphs
Gilles Parez, Pierre-Antoine Bernard, Nicolas Crampé +1
We investigate multipartite information and entanglement measures in the ground state of a free-fermion model defined on a Hamming graph. Using the known diagonalization of the adj…
Waveguide-integrated silicon T centres
A. DeAbreu, C. Bowness, A. Alizadeh +13
The performance of modular, networked quantum technologies will be strongly dependent upon the quality of their quantum light-matter interconnects. Solid-state colour centres, and…
Simple and Rigorous Proof Method for the Security of Practical Quantum Key Distribution in the Single-Qubit Regime Using Mismatched Basis Measurements
Michel Boyer, Gilles Brassard, Nicolas Godbout +2
Quantum key distribution (QKD) protocols aim at allowing two parties to generate a secret shared key. While many QKD protocols have been proven unconditionally secure in theory, pr…
Fiat-Shamir for Proofs Lacks a Proof Even in the Presence of Shared Entanglement
Frédéric Dupuis, Philippe Lamontagne, Louis Salvail
We explore the cryptographic power of arbitrary shared physical resources. The most general such resource is access to a fresh entangled quantum state at the outset of each protoco…
Two-mode squeezed state quantisation and semiclassical portraits
Jean-Pierre Gazeau, Véronique Hussin, James Moran +1
Quantisation with Gaussian type states offers certain advantages over other quantisation schemes, in particular, they can serve to regularise formally discontinuous classical funct…
Uniform continuity bound for sandwiched Rényi conditional entropy
Ashutosh Marwah, Frédéric Dupuis
We prove a simple uniform continuity bound for the sandwiched Rényi conditional entropy for , which is independent of the dimension of the condition…
The bound-state solutions of the one-dimensional pseudoharmonic oscillator
Rufus Boyack, Asadullah Bhuiyan, Aneca Su +1
We study the bound states of a quantum mechanical system consisting of a simple harmonic oscillator with an inverse square interaction, whose interaction strength is governed by a…
Coherent states of the two-dimensional non-separable supersymmetric Morse potential
James Moran, Véronique Hussin
Supersymmetry is a technique that allows us to extract information about the states and spectra of quantum mechanical systems which may otherwise be unsolvable. In this paper we re…
Ladder operators and coherent states for the Rosen-Morse system and its rational extensions
Simon Garneau-Desroches, Véronique Hussin
Ladder operators for the hyperbolic Rosen-Morse (RMII) potential are realized using the shape invariance property appearing, in particular, using supersymmetric quantum mechanics.…
Universal quantum computation with symmetric qubit clusters coupled to an environment
Christian Boudreault, Hichem Eleuch, Michael Hilke +1
One of the most challenging problems for the realization of a scalable quantum computer is to design a physical device that keeps the error rate for each quantum processing operati…
Degeneracy and coherent states of the two-dimensional Morse potential
James Moran
In this paper we construct coherent states for the two-dimensional Morse potential. We find the dependence of the spectrum on the physical parameters and use this to understand the…