Theory of strong coupling between quantum emitters and propagating surface plasmons

Area of Science:

• Quantum optics
• Condensed matter physics
• Plasmonics

Background:

• Strong coupling between quantum emitters and surface plasmons is a key phenomenon in nanoscale optics.
• Understanding the underlying quantum mechanics is crucial for controlling light-matter interactions.

Purpose of the Study:

• To establish the theoretical foundation of strong coupling between quantum emitters and propagating surface plasmons.
• To develop a quantum framework for analyzing this phenomenon in two-dimensional metal surfaces.
• To identify physical mechanisms and parameters optimizing strong coupling.

Main Methods:

• Development of a quantum framework incorporating coherent coupling, dissipation, and dephasing.
• Theoretical analysis of emitter-surface plasmon interactions.
• Formalism to determine optimal physical parameters for strong coupling.

Main Results:

• The quantum framework successfully explains the observed strong coupling phenomenology.
• Key physical mechanisms driving the strong coupling are revealed.
• Parameters that optimize the strong coupling phenomenon are determined.

Conclusions:

• The presented quantum framework provides a robust theoretical basis for understanding strong coupling in plasmonic systems.
• The study clarifies the quantum nature of the strong coupling phenomenon.
• This work offers insights for designing and optimizing quantum plasmonic devices.