The Bose-Marletto-Vedral experiment with nanodiamond interferometers: an insight on entanglement detection

TL;DR

This paper analyzes a proposed experiment using nanodiamond interferometers to detect gravitationally-induced entanglement, providing detailed insights into its setup, implementation, and underlying theoretical principles.

Contribution

It offers a detailed analysis of a novel experimental scheme for detecting quantum gravity effects via gravitational entanglement with nanodiamonds.

Findings

Feasibility of detecting gravitational entanglement with nanodiamonds

Optical readout methods for position measurement

Theoretical foundations supporting the experimental scheme

Abstract

Recently, it has been proposed a new method [arXiv:2405.21029] to detect quantum gravity effects, based on generating gravitational entanglement between two nano-diamonds with Nitrogen-Vacancy defects, in a magnetically trapped configuration. Here we analyse in detail the proposed experimental setup, with a particular focus on implementing the detection of the gravitationally-induced entanglement using an optical readout based on measuring the position of the nano-diamonds and its complementary basis. We also summarise some of the key theoretical and experimental ideas on which this proposed scheme is based.