Stochastically bundled dissipators for the quantum master equation
Abstract
The Lindblad master equation is a fundamental tool for describing the evolution of open quantum systems, but its computational complexity poses a significant challenge, especially for large systems. This article introduces a stochastic representation of the Lindblad dissipator that addresses this challenge by bundling the Lindblad operators. We demonstrate the effectiveness of this method by considering a Morse oscillator coupled to a spin bath. Our numerical experiments show that a small number of stochastically bundled operators can accurately capture the system's dynamics, even when the Hilbert space dimension is large. This method offers a new perspective on open quantum systems and provides a computationally efficient way to simulate their dynamics.
Cite
@article{arxiv.2408.12507,
title = {Stochastically bundled dissipators for the quantum master equation},
author = {Sayak Adhikari and Roi Baer},
journal= {arXiv preprint arXiv:2408.12507},
year = {2025}
}