Phase-controlled Fano resonance by the nanoscale optomechanics

TL;DR

This paper demonstrates a method to control Fano resonance line shapes in nanoscale optomechanics by tuning phase shifts in a Mach-Zehnder interferometer, enabling precise manipulation of resonance properties.

Contribution

It introduces a phase-controlled approach to tune Fano resonance in a nano-optomechanical system using an interferometric setup, which was not previously demonstrated.

Findings

Fano resonance can be tuned by phase shifts in the MZI.

The resonance line shapes vary periodically with phase adjustments.

The method enables precise control of nanoscale optomechanical interactions.

Abstract

Observation of the Fano line shapes is essential to understand properties of the Fano resonance in different physical systems. We explore a tunable Fano resonance by tuning the phase shift in a Mach-Zehnder interferometer (MZI) based on a single-mode nano-optomechanical cavity. The Fano resonance is resulted from the optomechanically induced transparency caused by a nano-mechanical resonator and can be tuned by applying an optomechanical MZI. By tuning the phase shift in one arm of the MZI, we can observe the periodically varying line shapes of the Fano resonance, which represents an elaborate manipulation of the Fano resonance in the nanoscale optomechanics.