Non-Markovian Dynamics and Entanglement in Quantum Brownian Motion

TL;DR

This paper investigates the non-Markovian quantum dynamics and entanglement behavior of two oscillators in quantum Brownian motion at low temperatures, providing a detailed analysis beyond common approximations.

Contribution

It introduces a systematic method to analyze entanglement in quantum Brownian motion without relying on the Born-Markov approximation, especially relevant for cold temperature regimes.

Findings

Entanglement dynamics are significantly affected by non-Markovian effects.

The approach accurately captures short-time quantum behavior at low temperatures.

Results are applicable to quantum information experiments in cold environments.

Abstract

Dynamical aspects of quantum Brownian motion in a low temperature environment are investigated. We give a systematic calculation of quantum entanglement among two Brownian oscillators without invoking Born-Markov approximation widely used for the study of open systems. Our approach is suitable to probe short time dynamics at cold temperatures where many experiments on quantum information processing are performed.