Quantum Control of Gravity with Levitated Mechanics

Introduction

The main objective of QuCoM is to demonstrate the proof of concept (TRL 1) of a levitated acceleration sensor and its ability to detect the gravity of small masses and in the quantum controlled regime. Toward this objective, we will explore the interplay between quantum mechanics and gravity in a parameter range accessible for cost-effective table-top experiments.

Experimental Approach

We will suspend sub-millimeter particles in optical and magnetic traps and use those to detect gravitational forces in an unprecedented mass regime. Additionally, we will investigate quantum superpositions in which these masses are delocalized.

Theoretical Framework

We will address some of the most popular theoretical proposals combining quantum physics and gravity in a nonstandard fashion. The proposed experiments will assess their limits of validity and/or further constrain the values of their parameters.

Consortium Composition

The consortium consists of:

• Two experimentalists
• Two theorists
• Two SMEs

This diverse team will work collaboratively to address the project's objectives.

Experimental Expertise

The experiments in question will be performed with optically and magnetically trapped micro/nano-particles based on the experimental expertise of partners in the consortium. Levitated mechanics experiments at Southampton have already been picked up by the EU Innovation radar.

Project Goals

In QuCoM, we will go beyond and demonstrate:

1. Two-mass gravity sensing
2. The operation of our sensors in the quantum domain

The state preparation, control, and analysis schemes are based on the expertise of the theory partners.

SME Contributions

QuCoM partner high-tech SMEs will help to optimize the experimental apparatus for the fulfillment of the targeted objectives. This optimization will, in turn, position them to offer their improved products in sub mK, low vibration cryogenic equipment to the market.

Technology Impact

The SME LSI will explore, together with the University of Leiden, the feasibility of implementing our technology into a micro-satellite platform for space-based metrology and Earth exploration utilizing gravitational detection. This is our direct technology impact and innovation case.