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Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids

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Published on: May 27, 2020

Predicting topological entanglement entropy in a Rydberg analogue simulator.

Linda Mauron^1,2, Zakari Denis^1,2, Jannes Nys^1,2

¹Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.

|August 15, 2025

Summary

This summary is machine-generated.

This study introduces a computational method to predict topological matter dynamics using a quantum-spin-liquid state on a Rydberg atom simulator. The findings reveal that the simulated state lacks a key topological signature, even when prepared adiabatically.

Keywords:

Quantum simulation Topological defects

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Area of Science:

Quantum physics
Condensed matter physics
Computational physics

Background:

Predicting dynamical properties of topological matter is computationally challenging.
Numerical studies are limited to simplified models and lattices.
Quantum simulators offer a promising avenue for studying complex quantum systems.

Purpose of the Study:

To develop a computational method for predicting the dynamical preparation of topological states.
To investigate the topological properties of a quantum-spin-liquid state on a Rydberg atom simulator.
To compare simulated topological states with experimental observations.

Main Methods:

Time-dependent correlated ansatz for dynamical state preparation.
Time-dependent variational Monte Carlo technique for system state representation.
Accurate modeling of Rydberg atom Hamiltonian and lattice topology.

Main Results:

Faithful representation of the system state throughout the dynamical protocol.
Access to global quantities like topological entanglement entropy.
Confirmation of topological properties during dynamical preparation.

Conclusions:

The simulated state exhibits local properties similar to resonating-valence-bond states.
The simulated state lacks the characteristic topological entanglement entropy signature.
This approach provides insights into topological entanglement dynamics beyond experimental capabilities.