Coupling of individual quantum emitters to channel plasmons

Abstract

Efficient light-matter interaction lies at the heart of many emerging technologies that seek on-chip integration of solid-state photonic systems. Plasmonic waveguides, which guide the radiation in the form of strongly confined surface plasmon-polariton modes, represent a promising solution to manipulate single photons in coplanar architectures with unprecedented small footprints. Here we demonstrate coupling of the emission from a single quantum emitter to the channel plasmon polaritons supported by a V-groove plasmonic waveguide. Extensive theoretical simulations enable us to determine the position and orientation of the quantum emitter for optimum coupling. Concomitantly with these predictions, we demonstrate experimentally that 42% of a single nitrogen-vacancy centre emission efficiently couples into the supported modes of the V-groove. This work paves the way towards practical realization of efficient and long distance transfer of energy for integrated solid-state quantum systems.

Material platforms for integrated quantum photonics

“…Additionally, Murray et al [175] demonstrated orthogonal bonding of a GaAs chip containing QDs and a silicon photonic chip with single-qubit circuitry. Probe-based manipulation has allowed integrating QDs into SiN waveguides [176] and onto MEMS tuners [168] (see Figure 6b), as well as positioning nanodiamond-based NV centers into photonic crystal structures [177] and plasmonic waveguides [178]. Diamond microwaveguides and PCCs containing single NV centers have been hybridized onto silicon chips [179,180], promising high quality hybrid quantum memories and single-photon sources (especially in the case of SiV centers).…”

Markovian and non-Markovian dynamics of quantum emitters coupled to two-dimensional structured reservoirs

“…Given the variety of experimental systems that are available nowadays to obtain the QED-like Hamiltonians [14][15][16][17][18][19][20][21][22][23][27][28][29][30][31][32][33], we consider a simplified model to describe the reservoir that can capture the most important features of the system, in the same spirit than using a bosonic tight-binding model for 1D systems. In particular, we describe our 2D bath as a set of N ×N bosonic modes, with annihilation operators a n , disposed in a square lattice, with energies ω a , position described by two integer indices n = (n x , n y ) (as we take the distance d ≡ 1 as the length unit) and nearest neighbor coupling J.…”

“…Recent advances in QE-nanophotonics integration [14][15][16][17][18][19][20][21][22][23][24][25][26] and the possibility of mimicking such QED scenarios in circuit QED [27][28][29][30][31] or cold atoms [32,33] has increased the interest in studying systems where the baths not only have an spectral structure but are also confined to reduced dimensionalities. This interplay between the structure and reduced dimensionality results in qualitatively new physics.…”

Quantum Emitters in Two-Dimensional Structured Reservoirs in the Nonperturbative Regime

“…This interaction leads, for example, to collective interactions between QEs [2,3] which can be harnessed for both quantum information and simulation applications. New avenues in the integration of QEs with nanophotonic structures [4][5][6][7][8][9][10][11][12][13][14] provide us with systems in which the QEs interact with low dimensional bosonic modes, with complicated energy dispersions in the case of engineered dielectrics [6][7][8][9][10][11][12]. Despite originally the main motivation of such implementations was to exploit the small sizes to enhance light-matter interactions, it was soon realized that intriguing phenomena arise because of the reduced dimensionality.…”