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Optical binding of two cooled micro-gyroscopes levitated in vacuum

Research output: Contribution to journalArticle

Abstract

Coupling between mesoscopic particles levitated in vacuum is a prerequisite for the realization of a large-scale array of particles in an underdamped environment as well as potential studies at the classical–quantum interface. Here, we demonstrate for the first time, to the best of our knowledge, optical binding between two rotating microparticles mediated by light scattering in vacuum. We investigate autocorrelations between the two normal modes of oscillation determined by the center-of-mass and the relative positions of the two-particle system. The inter-particle coupling, as a consequence of optical binding, removes the degeneracy of the normal mode frequencies, which is in good agreement with theory. We further demonstrate that the optically bound array of rotating microparticles retains their optical coupling during gyroscopic cooling, and exhibits cooperative motion whose center-of-mass is stabilized.
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Original languageEnglish
Pages (from-to)910-917
JournalOptica
Volume5
Issue number8
Early online date26 Jul 2018
DOIs
Publication statusPublished - 20 Aug 2018

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