Towards macroscopic spin and mechanical superposition via Rydberg interaction

TL;DR

This paper proposes a method to generate large-scale macroscopic superpositions in atomic and mechanical systems using Rydberg interactions, potentially enabling advanced quantum technologies.

Contribution

It introduces a novel scheme combining Rydberg dressing and bifurcation in an ultra-stable lattice to create large cat states and explores transfer to mechanical oscillators.

Findings

Predicts formation of 700-atom cat states

Analyzes decoherence effects with Quantum Jump Monte Carlo

Proposes transfer of superposition to mechanical oscillators

Abstract

This paper is a proposal for the generation of many-body entangled state in atomic and mechanical systems. Application of strong Rydberg dressing interaction and fast bifurcation scheme in an ultra-stable Cs lattice clock in this proposal results to a breakthrough in the formation of large cat states. By detailed study of the de-coherence effects using Quantum Jump Monte Carlo approach and considering obstacles in dense ensembles namely level mixing, molecule formation and collective decoherence this proposal predicts the formation of 700 atoms cat state. Dipole coupling between Rydberg atoms and charged cantilevers is proposed for the transfer of the generated superposition to far separated mechanical oscillators.