All-optical sub-Kelvin sympathetic cooling of a levitated microsphere in vacuum

Y. Arita, G. D. Bruce, E. M. Wright, S. H. Simpson, P. Zemanek, K. Dholakia

Research output: Contribution to journalArticlepeer-review


We demonstrate all-optical sympathetic cooling of a lasertrapped microsphere to sub-Kelvin temperatures, mediated by optical binding to a feedback-cooled adjacent particle. Our study opens prospects for multi-particle quantum entanglement and sensing in levitated optomechanics.

Original languageEnglish
Pages (from-to)1000-1002
Number of pages3
Issue number9
Publication statusPublished - 2022 Sep

Bibliographical note

Funding Information:
Ministerstvo Školství, Mládeže a Tˇelovýchovy (CZ.02.1.01/0.0/0.0/15_003/0000476); Grantová Agentura ˇ Ceské Republiky (21-19245K); Australian Research Council (DP220102303); Engineering and Physical Sciences Research Council (EP/P030017/1); Akademie vˇed ˇ Ceské republiky (Praemium Academiae).

Publisher Copyright:
© 2022 Optica Publishing Group.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics


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