Towards imaging-based quantum optomechanics

Christian M. Pluchar, Wenhua He, Morgan E. Choi, Jack Manley, Nico Deshler, Saikat Guha, Dalziel Wilson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Quantum optomechanics has led to advances in quantum sensing, optical manipulation of mechanical systems, and macroscopic quantum physics. However, previous studies have typically focused on dispersive optomechanical coupling, which modifies the phase of the light field. Here, we discuss recent advances in “imaging-based” quantum optomechanics – where information about the mechanical resonator’s motion is imprinted onto the spatial mode of the optical field, akin to how information encoded in an image. Additionally, we find radiation pressure backaction, a phenomenon not usually discussed in imaging studies, comes from spatially uncorrelated fluctuations of the optical field. First, we examine a simple thought experiment in which the displacement of a membrane resonator can be measured by extracting the amplitude of specific spatial modes. Torsion modes are naturally measured with this coupling and are interesting for applications such as precision torque sensing, tests of gravity, and measurements of angular displacement at and beyond the standard quantum limit. As an experimental demonstration, we measure the angular displacement of the torsion mode of a Si3N4 nanoribbon near the quantum imprecision limit using both an optical lever and a spatial mode demultiplexer. Finally, we discuss the potential for future imaging-based quantum optomechanics experiments, including observing pondermotive squeezing of different spatial modes and quantum back-action evasion in angular displacement measurements.

Original languageEnglish (US)
Title of host publicationQuantum Sensing, Imaging, and Precision Metrology II
EditorsJacob Scheuer, Selim M. Shahriar
PublisherSPIE
ISBN (Electronic)9781510670846
DOIs
StatePublished - 2024
EventQuantum Sensing, Imaging, and Precision Metrology II 2024 - San Francisco, United States
Duration: Jan 27 2024Feb 1 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12912
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceQuantum Sensing, Imaging, and Precision Metrology II 2024
Country/TerritoryUnited States
CitySan Francisco
Period1/27/242/1/24

Keywords

  • cavity optomechanics
  • nanomechanics
  • optical lever
  • quantum imaging
  • quantum optomechanics

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Towards imaging-based quantum optomechanics'. Together they form a unique fingerprint.

Cite this