Multiphoton blockade in the two-photon Jaynes-Cummings model

TL;DR

This paper investigates multiphoton blockade phenomena in the two-photon Jaynes-Cummings model, revealing conditions for single- and two-photon blockade effects and the role of quantum interference, with implications for quantum information processing.

Contribution

It introduces a criterion for multiphoton blockade in the two-photon Jaynes-Cummings model and analyzes the effects of quantum interference on photon blockade phenomena.

Findings

Single-photon blockade observed with cavity-field driving.

Two-photon blockade observed with atom driving.

Quantum interference enhances photon blockade effects.

Abstract

We study multiphoton blockade and photon-induced tunneling effects in the two-photon Jaynes-Cummings model, where a single-mode cavity field and a two-level atom are coupled via a two-photon interaction. We consider both the cavity-field-driving and atom-driving cases, and find that single-photon blockade and photon-induced tunneling effects can be observed when the cavity mode is driven, while the two-photon blockade effect appears when the atom is driven. For the atom-driving case (the two-photon transition process), we present a criterion of the correlation functions for the multiphoton blockade effect. Specifically, we show that quantum interference can enhance the photon blockade effect in the single-photon cavity-field-driving case. Our results are confirmed by analytically and numerically calculating the correlation function of the cavity-field mode. Our work has potential applications in quantum information processing and paves the way for the study of multiphoton quantum coherent devices.