Fano effect induced giant and robust enhancement of photon correlations in cavity QED systems

Abstract

Fano effect arising from interference between two dissipation channels to the radiation continuum enables to tune the photon statistics. Understanding the role of Fano effect and exploiting to achieve strong photon correlations are of both fundamental and applied significance. We present an analytical description of Fano-enhanced photon correlations based on cavity quantum electrodynamics to show that, the Fano effect in atom-cavity systems can improve the degree of antibunching by over four orders of magnitude. The enhancement factors and the optimal conditions are explicitly given, and found related to the Fano parameter $q$. Remarkably, the Fano enhancement manifests robustness against the decoherence processes, and can survive in the weak coupling regime. We expect our work to provide insight in tuning the photon statistics through Fano effect, which offers a new route to enhance the photon correlations, as well as the possibility of generating nonclassical light in a wider diversity of systems without the need of strong light-matter interaction.

6 pages, 3 figures

References in corpus (8)

• The Quantum Internet
• QuTiP 2: A Python framework for the dynamics of open quantum systems
• Climbing the Jaynes-Cummings Ladder and Observing its Sqrt(n) Nonlinearity in a Cavity QED System
• The Unconventional Photon Blockade
• Coherent interference effects in a nano-assembled optical cavity-QED system
• Fano resonance control in a photonic crystal structure and its application to ultrafast switching
• Cavity Quantum Electrodynamics with Frequency-Dependent Reflectors
• Theory of Fano effect in cavity quantum electrodynamics