Frequency-selective amplification of nonlinear response in strongly correlated bosons

TL;DR

This paper introduces a protocol using resonance-induced amplification to enhance nonlinear responses in strongly correlated bosonic systems, enabling selective harmonic amplification based on incident pulse frequency.

Contribution

The paper presents a novel resonance-based method to selectively amplify nonlinear harmonic responses in the extended Bose-Hubbard model.

Findings

Enhanced nonlinear harmonic spectra achieved

Optimal field strength identified for amplification

Frequency-selective amplification demonstrated

Abstract

We present a protocol to generate enhanced non-linear responses of incident pulses in the density wave phase within the extended Bose-Hubbard model using the concept of resonance-induced amplification (RIA). This method enables the selection of an incident pulse frequency to amplify the desired harmonic order. We characterize the enhancement of the non-linear harmonic spectra under various frequencies and field strengths of the incident pulses, and demonstrate that an optimal field strength is necessary to realize our protocol.