Resonance fluorescence spectrum of aΛ-type quantum emitter close to a metallic nanoparticle

Abstract

We theoretically study the resonance fluorescence spectrum of a three-level quantum emitter coupled to a spherical metallic nanoparticle. We consider the case that the quantum emitter is driven by a single laser field along one of the optical transitions. We show that the development of the spectrum depends on the relative orientation of the dipole moments of the optical transitions in relation to the metal nanoparticle. In addition, we demonstrate that the location and width of the peaks in the spectrum are strongly modified by the exciton-plasmon coupling and the laser detuning, allowing to achieve controlled strongly subnatural spectral line. A strong antibunching of the fluorescent photons along the undriven transition is also obtained. Our results may be used for creating a tunable source of photons which could be used for a probabilistic entanglement scheme in the field of quantum information processing.

Photon statistics of a quantum emitter close to a lattice of plasmonic nanoparticles

“…Localized surface plasmons, plasma oscillations occurring at the surface of finite metallic nanostructures, can alter drastically the spontaneous emission properties of nearby quantum emitters (QEs) [1,2]. A large number of theoretical works have shown that the spontaneous emission spectra [3][4][5][6] or the resonance fluorescence spectra and the corresponding statistical properties of emitted light [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] of QEs in the vicinity of plasmonic nanostructures, like metallic or metal-dielectric nanostructures, are dramatically different from the case where the QEs are placed in an isotropic dielectric or free-space vacuum. These findings are also supported by experimental studies [25][26][27][28][29][30].…”

Giant Self-Kerr Nonlinearity in the Metal Nanoparticles-Graphene Nanodisks-Quantum Dots Hybrid Systems Under Low-Intensity Light Irradiance

“…The metal nanoparticles (MNPs) can enhance the nonlinear optical response due to the large local field enhancement induced near the surface and control the optical properties of quantum emitters near the MNPs [ 13 , 14 , 15 ]. Moreover, plasmonic excitations can respond within femtoseconds enabling ultrafast processing of optical signal [ 16 ], with high sensitivity to the size and the shape of the MNPs as well as the dielectric properties of the metal and surrounding medium [ 17 ].…”

Altering Degenerate Four-Wave Mixing and Third-Harmonic Generation in a Coupled Quantum Dot–Metallic Nanoparticle Structure with the Use of the Purcell Effect

“…In Figure 1 we present the modification in the quantum dot's spontaneous decay rate for two different quantum dot's electric dipole directions, along the x-axis (γ x ) and along the z-axis (γ z ), as a function of distance d. The obtained behavior is typical, see, for example, refs. [4][5][6]9,10]. Both decay rates are enhanced for small distances between the quantum dot and the metal nanoparticle, but as this distance increases the decay rate corresponding to the electric dipole direction along the x-axis decreases monotonically and the value of the decay rate remains larger than the spontaneous decay rate in the absence of the metallic nanoparticle γ 0 .…”