Impact of non-Hermitian Mode interaction on Inter-cavity Light transfer

TL;DR

This paper shows that non-Hermitian coupling accurately describes light transfer between coupled optical cavities, especially in small systems, offering new insights for quantum device interactions.

Contribution

It demonstrates that non-Hermitian coupling is essential for correctly modeling inter-cavity light transfer, highlighting its importance in small-scale quantum systems.

Findings

Non-Hermitian coupling accurately models light transfer.

The effect is more significant in smaller systems.

Provides insights for quantum coupled-device analysis.

Abstract

Understanding inter-site mutual mode interaction in coupled physical systems is essential to comprehend large compound systems as this local interaction determines the successive multiple inter-site energy transfer efficiency. We demonstrate that only the non-Hermitian coupling can correctly account for the light transfer between two coupled optical cavities. We also reveal that the non-Hermitian coupling effect becomes much crucial as the system dimension gets smaller. Our results provide an important insight to deal with general coupled-devices in the quantum regime.