Dynamical Properties of Three-Photon Blockade in a Two-Atom Cavity QED System

TL;DR

This paper theoretically explores three-photon blockade in a two-atom cavity QED system, revealing how phase differences in atomic radiation affect photon blockade regimes and improving anti-bunched photon pair generation.

Contribution

It demonstrates how phase control in a two-atom cavity QED system can optimize three-photon blockade and anti-bunched photon pair production.

Findings

Three-photon blockade with bunched two photons achieved in in-phase radiation.

Out-of-phase radiation prohibits one-photon excitations, enabling wider three-photon blockade regime.

The two-atom scheme enhances anti-bunched photon pair generation.

Abstract

We theoretically investigate the three-photon blockade phenomenon in a two atoms cavity QED system, where two atoms are driven by a coherent field. In the case of in-phase radiations, we show that the three-photon blockade with bunched two photons can be realized in a small regime of the driving field Rabi frequency. However, in the case of out-of-phase radiations, the one-photon excitations are prohibited due to the destructive interference, and three-photon blockade can be realized in a wide regime of driving field Rabi frequency. In addition, the three-photon blockade phenomenon can be significantly improved. The results presented here show that this two-atom scheme is a good candidate to achieve anti-bunched photon pairs.