Effective Control of Photon Statistics from Electroluminescence by Fano-like Interference Effect

Area of Science:

• Quantum Optics
• Molecular Electronics
• Condensed Matter Physics

Background:

• Photon blockade is essential for single-photon emission in optical systems.
• Achieving photon blockade in electrically driven molecular junctions is challenging.
• Fano-like interference offers a potential mechanism for controlling photon statistics.

Purpose of the Study:

• To propose and theoretically investigate a scheme for tuning photon statistics in molecular junctions.
• To demonstrate the transition from photon bunching to antibunching via Fano-like interference.
• To explore the feasibility of this effect in experimentally relevant systems.

Main Methods:

• Theoretical modeling of a system with two molecules in an optical cavity.
• Analysis of photon statistics under electrical pumping.
• Investigation of the role of Fano-like interference and dipole-dipole interactions.

Main Results:

• A transition from photon bunching to antibunching was observed.
• The effect is driven by Fano-like interference.
• The phenomenon persists despite dipole-dipole interactions between molecules.

Conclusions:

• The proposed scheme effectively tunes photon statistics in molecular junctions.
• Fano-like interference provides a viable route for generating non-classical light from molecular systems.
• The proposal is compatible with current-carrying scanning tunneling microscope junctions.