19 citations · 28 across the 11 of their papers we have counts for
11 papers
Algebraic Diagrammatic Construction of the Multichannel Dyson Equation
Thibault Demartini, J. Arjan Berger, Guillaume Blanchon +4
The multichannel Dyson equation (MCDE) was recently introduced as a new approximation scheme to compute the one-body Green function in many-body systems, as reported by Riva et al.…
Emulation of large-scale qubit registers with a phase-space approach
Christian de Correc, Denis Lacroix, Corentin Bertrand
A phase-space approach is used and benchmarked for the simulation of the continuous-time evolution of large registers of qubits. It is based on a statistical ensemble of independen…
Exploring fixed points and eigenstates of quantum systems with reinforcement learning
María Laura Olivera-Atencio, Jesús Casado-Pascual, Denis Lacroix
We introduce a reinforcement learning algorithm designed to identify the fixed points of a given quantum operation. The method iteratively constructs the unitary transformation tha…
Neutrino thermalization via randomization on a quantum processor
Oriel Kiss, Ivano Tavernelli, Francesco Tacchino +2
The dynamical evolution of neutrino flavor in supernovae can be modeled by an all-to-all spin Hamiltonian with random couplings. Simulating such two-local Hamiltonian dynamics rema…
Quantum simulations of Green's functions for small superfluid systems
Samuel Aychet-Claisse, Denis Lacroix, Vittorio Somà +1
An end-to-end strategy for hybrid quantum-classical computations of Green's functions in many-body systems is presented and applied to the pairing model. The scheme makes explicit…
Excited States from ADAPT-VQE convergence path in Many-Body Problems: application to nuclear pairing problem and molecule dissociation
Jing Zhang, Denis Lacroix
A quantum computing algorithm is proposed to obtain low-lying excited states in many-body interacting systems. The approximate eigenstates are obtained by using a quantum space dia…
Neutron-proton pairing correlations described on quantum computers
Jing Zhang, Denis Lacroix, Yann Beaujeault-Taudiere
The ADAPT-VQE approach is used to solve the neutron-proton pairing problem in atomic nuclei. This variational approach is considered today as one of the most powerful methods to it…
Solving the Lipkin model using quantum computers with two qubits only with a hybrid quantum-classical technique based on the Generator Coordinate Method
Yann Beaujeault-Taudiere, Denis Lacroix
The possibility of using the generator coordinate method (GCM) using hybrid quantum-classical algorithms with reduced quantum resources is discussed. The task of preparing the basi…
Restoring symmetries in quantum computing using Classical Shadows
Edgar Andres Ruiz Guzman, Denis Lacroix
We introduce a method to enforce some symmetries starting from a trial wave-function prepared on quantum computers that might not respect these symmetries. The technique eliminates…
Efficient solution of the non-unitary time-dependent Schrodinger equation on a quantum computer with complex absorbing potential
Mariane Mangin-Brinet, Jing Zhang, Denis Lacroix +1
We explore the possibility of adding complex absorbing potential at the boundaries when solving the one-dimensional real-time Schrödinger evolution on a grid using a quantum comput…
Combining symmetry breaking and restoration with configuration interaction: a highly accurate many-body scheme applied to the pairing Hamiltonian
J. Ripoche, D. Lacroix, D. Gambacurta +2
Background: Ab initio many-body methods have been developed over the past ten years to address mid-mass nuclei... As progress in the design of inter-nucleon interactions is made, f…