Decoherence of a uniformly accelerated finite-time detector

TL;DR

This paper investigates how uniform acceleration affects the decoherence of a finite-time detector in a superposition state, revealing dependencies on acceleration, interaction time, and initial qubit orientation, with implications for understanding Unruh radiation effects.

Contribution

It introduces a finite-time analysis of decoherence in an accelerated detector with a superposition state, highlighting parameter dependencies and potential for improved decoherence estimation.

Findings

Decoherence depends on acceleration and interaction duration.

Qubit initial state orientation influences decoherence degree.

Adjusting parameters can enhance decoherence measurement accuracy.

Abstract

We study a uniformly accelerated detector coupled to a massless scalar field for a finite time interval. By considering the detector initially prepared in a superposition state, qubit state, we find that the acceleration induces decoherence on the qubit. Our results suggest the dependence of loss of coherence on the polar angle of qubit state on a Bloch sphere and the time interaction. The adjust those parameters can significantly improve the conditions to estimate the degree of decoherence induced by Unruh radiation.