Quantum speed limit of a photon under non-Markovian dynamics

TL;DR

This paper investigates how non-Markovian noise influences the quantum speed limit of a photon, revealing that it can either accelerate or slow down quantum evolution depending on environmental control, with implications for quantum technology.

Contribution

It demonstrates that non-Markovian effects can slow down photon quantum evolution and shows how environmental parameters can be tuned to control the quantum speed limit.

Findings

Non-Markovianity can slow photon quantum evolution.

Quantum speed limit can be controlled via environment parameters.

Results are relevant for experimental quantum photonic systems.

Abstract

Quantum speed limit (QSL) under noise has drawn considerable attention in real quantum computational processes and quantum communication. Though non-Markovian noise is proven to be able to accelerate quantum evolution for a damped Jaynes-Cummings model, in this work we show that non-Markovianity may even slow down the quantum evolution of an experimentally controllable photon system. As an important application, QSL time of a photon can be well controlled by regulating the relevant environment parameter properly, which is close to reach the currently available photonic experimental technology.