Quantum speed limit time for moving qubit inside leaky cavity

TL;DR

This paper investigates how the quantum speed limit time for a moving qubit inside a leaky cavity varies with qubit velocity, revealing that higher velocities increase the QSL time and lead to more stable quantum evolution.

Contribution

It introduces a model analyzing the QSL time for a moving qubit in a leaky cavity, highlighting the effects of velocity on evolution speed and stability.

Findings

QSL time increases with qubit velocity in both coupling regimes.

Higher velocity causes the evolution speed to approach a constant.

System stability improves with increased qubit velocity.

Abstract

The minimum time required for a quantum system to evolve from an arbitrary initial state to its orthogonal state is known as the quantum speed limit (QSL) time. In this work, we consider the model in which a single qubit moves inside a leaky cavity and then we study the QSL time for this model. Notably, we show that for both weak and strong coupling regimes, the QSL time increases with increasing the velocity of the qubit inside the leaky cavity. Moreover, it is observed that by increasing qubit velocity, the speed of the evolution tends to a constant value and the system becomes more stable.