SAMOP 2023 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 23: Optomechanics I & Optovibronics
Q 23.3: Vortrag
Mittwoch, 8. März 2023, 11:30–11:45, A320
Coherent control of Brillouin optomechanics in waveguides — •Changlong Zhu1, Junyin Zhang1, Christian Wolff2, and Birgit Stiller1 — 1Max Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany — 2Centre for Nano Optics, University of Southern Denmark, Campusvej 55, DK-5230, Odense M, Denmark
Brillouin optomechanics in waveguides allows a triply-resonant interaction between an optical, scattered light, and an acoustic wave. Here, we present a formalism to describe backward Brillouin optomechanics in waveguides in the dynamic regime with a pulsed pump. This formalism reveals the connection between waveguide Brillouin optomechanics and cavity optomechanics. By utilizing this theoretical framework, we show a closed solution for the coupled-mode equation of Brillouin optomechanics under the undepleted assumption, which can be used to investigate the coherent control of waveguide optomechanics in the quantum regime, such as coherent photon-phonon transfer, phonon cooling, and photon-phonon entanglement. In addition, we propose a dynamic Brillouin cooling scheme in Brillouin-active integrated waveguides, where the optical dissipation exceeds the mechanical dissipation which is the common case in optical waveguides. By modulating the coupling intensity of the backward Brillouin anti-Stokes interaction via a pulsed pump, a phonon cooling factor with several orders of magnitude can be achieved.