Quantum symmetry breaking of exciton/polaritons in metal-nanorod plasmonic array

Abstract

We study the collective, superradiant behavior in the system of emitter-dressed Ag nanorods. Starting from the Drude model for the plasmon oscillations, we arrive at a semi-empirical Hamiltonian describing the coupling between quantized surface plasmon modes and the quantum emitters that can be controlled by manipulating their geometry, spacing, and orientation. Further, identifying the lowest polariton mode as SP-states dressed by excitons in the vicinity of $k=0$, we examine conditions allowing for the polariton quantum phase transition. While the system is formally a 1D array, we show that the polariton states of interest can undergo a quantum phase transition to form a Bose condensate at finite temperatures for physically accessible parameter ranges.

9 pages, 5 figures

References in corpus (8)

• Quantum Plasmonics
• Quantum-fluid dynamics of microcavity polaritons
• Non-equilibrium quantum condensation in an incoherently pumped dissipative system
• Collective Dynamics of Bose--Einstein Condensates in Optical Cavities
• Collective coherence in planar semiconductor microcavities
• Spontaneous microcavity-polariton coherence across the parametric threshold: Quantum Monte Carlo studies
• A BCS wavefunction approach to the BEC-BCS crossover of exciton-polariton condensates
• Superradiance, subradiance, and suppressed superradiance of dipoles near a metal interface

Cited by in corpus (4)

• Probing dynamical symmetry breaking using quantum-entangled photons
• Second-harmonic generation in nonlinear plasmonic lattices enhanced by quantum emitter gain medium
• Non-equilibrium states of a plasmonic Dicke model with coherent and dissipative surface plasmon-quantum emitter interactions
• Degenerate parametric down-conversion facilitated by exciton-plasmon polariton states in nonlinear plasmonic cavity