All-optical Nanoscale Control of Photon Correlations: Dressed States Assisted Quantum Interference Effects

TL;DR

This paper introduces an all-optical method using hybrid quantum plasmonic systems to actively control photon correlations at the nanoscale, enabling modulation from photon bunching to antibunching for quantum photonic applications.

Contribution

It presents a novel all-optical scheme leveraging dressed states and quantum interference in hybrid plasmonic systems to control photon statistics, effective even in bad cavity conditions.

Findings

Photon correlations can be continuously tuned from bunching to antibunching.

The scheme is effective in the bad cavity limit, unlike traditional cavity QED methods.

Analytical and multimode models clarify the roles of quantum interference.

Abstract

We propose an all-optical scheme to control the photon statistics using hybrid quantum plasmonic system. With the aid of dressed states assisted quantum interference effects, it is shown that the photon correlations of a signal field can be continuously modulated from bunching to antibunching under the control of a pump field. Apart from the exact multimode model, a single-mode model and an analytical treatment are also provided to help us identify the roles of multimode coupling and quantum interference between probability amplitudes. The proposed scheme, in contrast to the cavity quantum electrodynamics methods, works well even in the bad cavity limit. These findings suggest that this composite system provides a feasible nanophotonic platform for active modulation of photon statistics and for future quantum devices.