@inproceedings{1bf956a0a2c04484a191d380020a618a,
title = "Quantum-limited imaging of a nanomechanical resonator by spatial mode sorting",
abstract = "We explore the use of a spatial mode sorter to image a nanomechanical resonator, with the goal of studying the quantum limits of active imaging and extending the toolbox for optomechanical force sensing. In our experiment, we reflect a Gaussian laser beam from a vibrating nanoribbon and pass the reflected beam through a commercial spatial mode demultiplexer (Cailabs Proteus-S). The intensity in each demultiplexed channel depends on the mechanical mode shapes and encodes information about their displacement amplitudes. As a concrete demonstration, we monitor the angular displacement of the ribbon{\textquoteright}s fundamental torsion mode by illuminating in the fundamental Hermite-Gauss mode (HG00) and reading out in the HG01 mode. We show that this technique permits readout of the ribbon{\textquoteright}s torsional vibration with a precision near the quantum limit.",
keywords = "nanomechanics, optomechanics, precision sensing, quantum imaging, quantum sensing",
author = "Choi, \{Morgan E.\} and Pluchar, \{Christian M.\} and Wenhua He and Saikat Guha and Wilson, \{Dalziel J.\}",
note = "Publisher Copyright: {\textcopyright} 2025 SPIE.; Quantum Sensing, Imaging, and Precision Metrology III 2025 ; Conference date: 25-01-2025 Through 31-01-2025",
year = "2025",
doi = "10.1117/12.3040560",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Shahriar, \{Selim M.\}",
booktitle = "Quantum Sensing, Imaging, and Precision Metrology III",
}