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Journal Article

Optomechanical Multi-Mode Hamiltonian for Nanophotonic Waveguides

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Hammerer,  Klemens
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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1604.07081.pdf
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Citation

Zoubi, H., & Hammerer, K. (2016). Optomechanical Multi-Mode Hamiltonian for Nanophotonic Waveguides. Physical Review A, 94: 053827. doi:10.1103/PhysRevA.94.053827.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002C-3E27-E
Abstract
We develop a systematic method for deriving a quantum optical multi-mode Hamiltonian for the interaction of photons and phonons in nanophotonic dielectric materials by applying perturbation theory to the electromagnetic Hamiltonian. The Hamiltonian covers radiation pressure and electrostrictive interactions on equal footing. As a paradigmatic example, we apply our method to a cylindrical nanoscale waveguide, and derive a Hamiltonian description of Brillouin quantum optomechanics. We show analytically that in nanoscale waveguides radiation pressure dominates over electrostriction, in agreement with recent experiments. The calculated photon-phonon coupling parameters are used to infer gain parameters of Stokes Brillouin scattering in good agreement with experimental observations.