Quantum optomechanics of a Bose-Einstein Antiferromagnet
H. Jing, D. S. Goldbaum, L. Buchmann, and P. Meystre
TL;DR
This paper explores the quantum optomechanical behavior of an antiferromagnetic Bose-Einstein condensate, focusing on spin-wave excitations as mechanical elements, enabling the study of quantum spin fluctuations in a controllable system.
Contribution
It introduces a novel system where spin-wave excitations in a Bose-Einstein condensate act as mechanical elements for dispersive rotational optomechanics, with potential for quantum regime preparation.
Findings
System can be prepared deep in the quantum regime
Provides a bottom-up realization of dispersive rotational optomechanics
Enables direct observation of quantum spin fluctuations
Abstract
We investigate the cavity optomechanical properties of an antiferromagnetic Bose-Einstein con- densate, where the role of the mechanical element is played by spin-wave excitations. We show how this system can be described by a single rotor that can be prepared deep in the quantum regime under realizable experimental conditions. This system provides a bottom-up realization of dispersive rotational optomechanics, and opens the door to the direct observation of quantum spin fluctuations.
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