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. The stochastic dissipator maintains the Lindblad form, ensuring completely positive and trace-preserving dynamics. 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 s

SUBMITTER: Adhikari S 

PROVIDER: S-EPMC12020372 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature