Few-Mode Field Quantization of Arbitrary Electromagnetic Spectral Densities

Area of Science:

• Quantum optics
• Plasmonics
• Photonic structures

Background:

• Understanding quantum emitter interactions with electromagnetic environments is crucial for quantum technologies.
• Simulating these interactions in complex nanostructures is computationally challenging.

Purpose of the Study:

• To develop a versatile framework for describing quantum emitter-environment interactions.
• To simplify the field quantization process using a few-mode master equation.
• To validate the framework by simulating spontaneous decay in a hybrid plasmonic-photonic structure.

Main Methods:

• Developed a few-mode master equation framework.
• Quantized the electromagnetic field by fitting spectral density to a model system.
• Utilized classical electromagnetic simulations to obtain spectral density.
• Modeled the system with a small number of lossy, interacting modes.

Main Results:

• The framework successfully describes quantum emitter-environment interactions.
• Accurate simulation of population and electric field spatial dynamics during spontaneous decay.
• Demonstrated the framework's applicability to complex hybrid plasmonic-photonic systems.

Conclusions:

• The proposed framework offers an efficient and accurate method for simulating quantum emitter dynamics.
• This approach simplifies the analysis of quantum phenomena in engineered electromagnetic environments.
• The method is broadly applicable to various quantum optical and nanophotonic systems.