---
title: "Stationary entanglement of a levitated oscillator with an optical field"
description: "Stationary entanglement between the motion of macroscopic objects and light is a long-standing goal of quantum optomechanics, with implications for both fundamental tests of quantum physics and emerging quantum technologies. We report the generation of quantum entanglement between the center-of-mass motion of a…"
datePublished: "2026-10-01"
lastmod: "2026-10-08T09:19:26+00:00"
authors:
  - "Q. Deplano"
  - "A. Pontin"
  - "F. Marino"
  - "F. Marin"
journal: "Science"
publisher: "American Association for the Advancement of Science (AAAS)"
doi: "10.1126/science.aeh1375"
publicationType: "journal-article"
schemaType: "ScholarlyArticle"
volume: "394"
issue: "6819"
pages: "113-117"
sponsor: "European Commission; Ministero dell’Università e della Ricerca"
language: "en-GB"
slug: "10.1126-science.aeh1375"
---

# Stationary entanglement of a levitated oscillator with an optical field

**Authors:** Q. Deplano, A. Pontin, F. Marino, F. Marin  
**Journal:** Science  
**Publisher:** American Association for the Advancement of Science (AAAS)  
**Published:** 2026-10-01  
**Volume:** 394  
**Issue:** 6819  
**Pages:** 113-117  
**DOI:** [10.1126/science.aeh1375](https://dx.doi.org/10.1126/science.aeh1375)

## Abstract

Stationary entanglement between the motion of macroscopic objects and light is a long-standing goal of quantum optomechanics, with implications for both fundamental tests of quantum physics and emerging quantum technologies. We report the generation of quantum entanglement between the center-of-mass motion of a nanosphere levitated in an optical tweezer inside an optical cavity and the electromagnetic field. Using heterodyne detection, we reconstructed the full set of optomechanical correlations and observed a violation of separability bounds between the mechanical motion and a propagating optical mode, demonstrating the distribution of nonclassical correlations beyond the interaction region. The entanglement was generated at room temperature and remained robust over a broad range of parameters. Our results establish levitated optomechanical systems as a platform for continuous-variable quantum communication and for tests of macroscopic quantum physics.

## Articles on this publication
- [Стеклянную наносферу запутали со светом без глубокого охлаждения](https://hanga.su/2800,2026)