Quantum Zeno effect with partial measurement and noisy dynamics

TL;DR

This paper investigates how continuous partial measurement and short-correlated noise influence the Quantum Zeno Effect, revealing that noise can either enhance or suppress the effect depending on specific parameters.

Contribution

It provides a detailed analysis of the interplay between measurement strength, noise, and the Quantum Zeno Effect, highlighting conditions for enhancement or suppression.

Findings

Noise can enhance the Quantum Zeno Effect under certain conditions.

The effect of noise varies with short-time and long-time survival probabilities.

Measurement strength determines the onset of the Quantum Zeno regime.

Abstract

We study the Quantum Zeno Effect (QZE) induced by continuous partial measurement in the presence of short-correlated noise in the system Hamiltonian. We study the survival probability and the onset of the QZE as a function of the measurement strength, and find that, depending on the noise parameters, the quantum Zeno effect can be enhanced or suppressed by the noise in different regions of the parameter space. Notably, the conditions for the enhancement of the QZE are different when determined by the short-time or long-time behavior of the survival probability, or by the measurement strength marking the onset of the quantum Zeno regime.