TY - GEN
T1 - Towards imaging-based quantum optomechanics
AU - Pluchar, Christian M.
AU - He, Wenhua
AU - Choi, Morgan E.
AU - Manley, Jack
AU - Deshler, Nico
AU - Guha, Saikat
AU - Wilson, Dalziel
N1 - Publisher Copyright:
© 2024 SPIE. All rights reserved.
PY - 2024
Y1 - 2024
N2 - 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.
AB - 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.
KW - cavity optomechanics
KW - nanomechanics
KW - optical lever
KW - quantum imaging
KW - quantum optomechanics
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U2 - 10.1117/12.3001998
DO - 10.1117/12.3001998
M3 - Conference contribution
AN - SCOPUS:85191658076
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Quantum Sensing, Imaging, and Precision Metrology II
A2 - Scheuer, Jacob
A2 - Shahriar, Selim M.
PB - SPIE
T2 - Quantum Sensing, Imaging, and Precision Metrology II 2024
Y2 - 27 January 2024 through 1 February 2024
ER -