Low-Loss All-Optical Zeno Switch in a Microdisk Cavity Using EIT

TL;DR

This paper proposes a low-loss, all-optical Zeno switch in a microdisk cavity utilizing EIT, achieving high contrast with minimal control power and low signal photon levels.

Contribution

It introduces a novel all-optical switching scheme combining EIT and the Zeno effect in a microdisk resonator with theoretical validation.

Findings

Over 35 dB switching contrast achieved.

Less than 0.1 dB insertion loss.

Requires only 2 micro-Watts of control power.

Abstract

We present theoretical results of a low-loss all-optical switch based on electromagnetically induced transparency and the classical Zeno effect in a microdisk resonator. We show that a control beam can modify the atomic absorption of the evanescent field which suppresses the cavity field buildup and alters the path of a weak signal beam. We predict more than 35 dB of switching contrast with less than 0.1 dB loss using just 2 micro-Watts of control-beam power for signal beams with less than single photon intensities inside the cavity.