Concept
Matrix mechanics
Related publications (63)
Variational quantum time evolution without the quantum geometric tensor
Giuseppe Carleo, Riccardo Rossi, Julien Sebastian Gacon, Jannes Willy E. Nys, Stefan Woerner
Realand imaginary -time quantum state evolutions are crucial in physics and chemistry for exploring quantum dynamics, preparing ground states, and computing thermodynamic observables. On near -term devices, variational quantum time evolution is a promising ...
College Pk2024Quantum Field Theory in AdS Space instead of Lehmann-Symanzik-Zimmerman Axioms
The boundary correlation functions for a quantum field theory (QFT) in a fixed anti-de Sitter (AdS) background should reduce to S-matrix elements in the flat-space limit. We consider this procedure in detail for four-point functions. With minimal assumptio ...
AMER PHYSICAL SOC2023Spin wave spectra of single crystal CoPS3
Henrik Moodysson Rønnow, Luc Testa, Ursula Bengaard Hansen, Mechthild Enderle
The spin waves in single crystals of the layered van der Waals antiferromagnet CoPS3 have been measured using inelastic neutron scattering. The data show four distinct spin wave branches with large (>14 meV) energy gaps at the Brillouin zone center indicat ...
AMER PHYSICAL SOC20233D printed fiber-optic nanomechanical bioprobe
Sandor Kasas, Jiangtao Zhou, Yiping Wang, Yuguang Chen
Ultrasensitive nanomechanical instruments, e.g. atomic force microscopy (AFM), can be used to perform delicate biomechanical measurements and reveal the complex mechanical environment of biological processes. However, these instruments are limited because ...
IOP Publishing Ltd2023Matrix product states with backflow correlations
By taking inspiration from the backflow transformation for correlated systems, we introduce a tensor network Ansatz which extends the well-established matrix product state representation of a quantum many-body wave function. This structure provides enough ...
AMER PHYSICAL SOC2022Simultaneous Perturbation Stochastic Approximation of the Quantum Fisher Information
Giuseppe Carleo, Julien Sebastian Gacon, Stefan Woerner
The Quantum Fisher Information matrix (QFIM) is a central metric in promising algorithms, such as Quantum Natural Gradient Descent and Variational Quantum Imaginary Time Evolution. Computing the full QFIM for a model with d parameters, however, is computat ...
VEREIN FORDERUNG OPEN ACCESS PUBLIZIERENS QUANTENWISSENSCHAF2021Multi-scale model for coupled piezoelectric-inelastic behavior
In this work, we present the development of a 3D lattice-type model at microscale based upon the Voronoi-cell representation of material microstructure. This model can capture the coupling between mechanic and electric fields with non-linear constitutive b ...
TECHNO-PRESS2021Non-Hermitian time evolution: From static to parametric instability
Romain Christophe Rémy Fleury, Aleksi Antoine Bossart
Eigenmode coalescence imparts remarkable properties to non-Hermitian time evolution, culminating in a purely non-Hermitian spectral degeneracy known as an exceptional point (EP). Here, we revisit time evolution around EPs, looking at both static and period ...
2021Local Emergence of Peregrine Solitons: Experiments and Theory
It has been shown analytically that Peregrine solitons emerge locally from a universal mechanism in the so-called semiclassical limit of the one-dimensional focusing nonlinear Schrodinger equation. Experimentally, this limit corresponds to the strongly non ...
FRONTIERS MEDIA SA2021n-photon blockade with an n-photon parametric drive
We propose a mechanism to engineer an n-photon blockade in a nonlinear cavity with an n-photon parametric drive lambda(adagger n + an). When an n-photon-excitation resonance condition is satisfied, the presence of n photons in the cavity suppress ...
AMER PHYSICAL SOC2021