The generation rate of quantum gravity induced entanglement with multiple massive particles

TL;DR

This paper analyzes how different configurations of multiple massive particles affect the efficiency of quantum gravity induced entanglement generation, identifying optimal setups for maximizing entanglement rate.

Contribution

It systematically investigates various multi-particle configurations for QGEM, identifying the most efficient setup with a central massive particle for up to seven particles.

Findings

Prism setup with a central particle is most efficient for n=4.

Entanglement efficiency increases with more particles up to seven.

Optimal configuration enhances entanglement generation rate.

Abstract

We investigate the generation rate of quantum gravity induced entanglement of masses(QGEM) in setup with multiple quantum massive particles, among of which only the gravity interaction due to the Newton potential is taken into account. When the distance between any two adjacent Stern-Gerlach (SG) devices is fixed, we consider all the possible configurations of the setup with the same number of particles. In particular, we systemically analyze the case of particle number n=4 and find that the prism setup with a massive particle at the center is the most efficient setup for the entanglement generation. This result can be extended to a system with multiple particles up to seven, where the entanglement efficiency is also enhanced in comparison with the setup with fewer particles. This work provides the strategy to construct the QGEM setup with the best generation rate of entanglement.