Light-mediated strong coupling between a mechanical oscillator and atomic spins 1 meter apart

verfasst von

Thomas M Karg, Baptiste Gouraud, Chun Tat Ngai, Gian-Luca Schmid, Klemens Hammerer, Philipp Treutlein

Abstract

Engineering strong interactions between quantum systems is essential for many phenomena of quantum physics and technology. Typically, strong coupling relies on short-range forces or on placing the systems in high-quality electromagnetic resonators, which restricts the range of the coupling to small distances. We used a free-space laser beam to strongly couple a collective atomic spin and a micromechanical membrane over a distance of 1 meter in a room-temperature environment. The coupling is highly tunable and allows the observation of normal-mode splitting, coherent energy exchange oscillations, two-mode thermal noise squeezing, and dissipative coupling. Our approach to engineering coherent long-distance interactions with light makes it possible to couple very different systems in a modular way, opening up a range of opportunities for quantum control and coherent feedback networks.

Organisationseinheit(en)

Institut für Theoretische Physik
Institut für Gravitationsphysik
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)

Externe Organisation(en)

Universität Basel

Typ

Artikel

Journal

Science

Band

369

Seiten

174-179

Anzahl der Seiten

6

ISSN

0036-8075

Publikationsdatum

10.07.2020

Publikationsstatus

Veröffentlicht

ASJC Scopus Sachgebiete

Allgemein

Elektronische Version(en)

http://arxiv.org/pdf/2004.14424 (Zugang: Offen)
https://doi.org/10.1126/science.abb0328 (Zugang: Geschlossen)