Brillouin optomechanics: From strong coupling to single-phonon-level operations

Georg Enzian, Lars Freisem, John J. Price, Andreas O. Svela, Jack Clarke, Magdalena Szczykulska, Joshua Nunn, Ian A. Walmsley, Jonathan Silver, Leonardo Del Bino, Shuangyou Zhang, Pascal Del’Haye, Biveen Shajilal, Jiri Janousek, Ben C. Buchler, Ping Koy Lam, Michael R. Vanner

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding


Backward Brillouin scattering in whispering-gallery-mode micro-resonators offers an exciting avenue to pursue both classical and quantum optomechanics applications. Our team—the Quantum Measurement Lab—together with our collaborators, are currently utilizing this regime and the favourable properties it affords for non-Gaussian motional state preparation of the acoustic field. In particular, the high mechanical frequencies, and low optical absorption and heating provide a promising route to overcome current hindrances within optomechanics. Three of our recent experimental results in this area include: (i) Brillouin optomechanical strong coupling, (ii) single-phonon addition or subtraction to a thermal state of the acoustic field, and (iii) performing phase-space tomography of non-Gaussian states generated by single- and multi-phonon subtraction. This SPIE presentation will cover these three results, what they enable, and the broader direction of our lab including the prospects of this platform for quantum-memory applications.

Original languageEnglish
Title of host publicationProceedings SPIE 12016, Optical and Quantum Sensing and Precision Metrology II
EditorsJacob Scheuer, Selim M. Shahriar
Place of PublicationU. S. A.
ISBN (Electronic)9781510649033
Publication statusPublished - 2 Mar 2022
EventOptical and Quantum Sensing and Precision Metrology II 2022 - Virtual, Online
Duration: 20 Feb 202224 Feb 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceOptical and Quantum Sensing and Precision Metrology II 2022
CityVirtual, Online


  • Brillouin optomechanics
  • Brillouin scattering
  • cavity optomechanics
  • quantum optics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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