Effects of phase-gradient on the nonadiabatic dynamics and photon-phonon conversion in one-dimensional array of optomechanical cavities

• URL: http://arxiv.org/abs/2409.18447v2
• Date: Wed, 29 Jan 2025 10:35:38 GMT
• Title: Effects of phase-gradient on the nonadiabatic dynamics and photon-phonon conversion in one-dimensional array of optomechanical cavities
• Authors: Divya Mishra, Parvendra Kumar,
• Abstract summary: Phase of a driving laser introduces the phase-dependent coupling between photonic and phononic modes.<n>Phase affects the nonadiabatic dynamics of the eigenmodes and photon-phonon conversion in an array of coupled optomechanical cavities.
• Score: 1.1510009152620668
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Manipulation of photonic and phononic coupling in the coupled resonators plays a crucial role in nonreciprocal devices and quantum transduction. In this work, we theoretically investigated how the phase of a driving laser introduces the phase-dependent coupling between photonic and phononic modes and affects the nonadiabatic dynamics of the eigenmodes and photon-phonon conversion in an array of coupled optomechanical cavities. We analyze the band structure of eigenmodes and show that the quick transfer of population between the eigenmodes takes place at the minimum energy gap, which can also be controlled via phase of the driving laser. We further show that the eigenmodes constitute the superposition of photonic and phononic modes, resulting from the optomechanical coupling between these modes. Moreover, the phase also enables the switching of the relative weights of photons and phonons in the eigenmodes. Finally, we investigate the effects of phase on the coherent conversion of photon-phonon in a finite-size array.

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