Decoherence measure by gravitational wave interferometers

TL;DR

This paper explores how gravitational wave interferometers can be used to detect quantum decoherence effects caused by various mechanisms, including spontaneous localization, gravitational decoherence, and extra-dimensional gravity.

Contribution

It proposes a novel application of gravitational wave interferometers to measure quantum decoherence, analyzing different decoherence mechanisms in this context.

Findings

Interferometers can detect decoherence through loss of interference.

Different decoherence mechanisms produce distinguishable signatures.

Potential to test fundamental quantum gravity theories.

Abstract

We consider the possibility to measure the quantum decoherence using gravitational wave interferometers. Gravitational wave interferometers create the superposition state of photons and measure the interference of the photon state. If the decoherence occurs, the interference of the photon state vanishes and it can be measured by the interferometers. As examples of decoherence mechanisms, we consider 1) decoherence by spontaneous localization, 2) gravitational decoherence and 3) decoherence by extra-dimensional gravity.