scholarly journals Quantum Optics in Nanostructures

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1919
Author(s):  
Yulia V. Vladimirova ◽  
Victor N. Zadkov
Keyword(s):  
Quantum Optics ◽  
Laser Field ◽  
Near Field ◽  
Squeezed States ◽  
Resonance Fluorescence ◽  
Plasmonic Nanoparticle ◽  
Quantum Emitter ◽  
Plasmon Resonances ◽  
Quantum Entangled States ◽  
Resonance Fluorescence Spectrum

This review is devoted to the study of effects of quantum optics in nanostructures. The mechanisms by which the rates of radiative and nonradiative decay are modified are considered in the model of a two-level quantum emitter (QE) near a plasmonic nanoparticle (NP). The distributions of the intensity and polarization of the near field around an NP are analyzed, which substantially depend on the polarization of the external field and parameters of plasmon resonances of the NP. The effects of quantum optics in the system NP + QE plus external laser field are analyzed—modification of the resonance fluorescence spectrum of a QE in the near field, bunching/antibunching phenomena, quantum statistics of photons in the spectrum, formation of squeezed states of light, and quantum entangled states in these systems.

Modification of the resonance fluorescence spectrum of a two-level atom in the near field of a plasmonic nanoparticle

JETP Letters ◽  
2013 ◽  
Vol 97 (8) ◽  
pp. 452-458 ◽  
Author(s):  
E. S. Andrianov ◽  
A. A. Pukhov ◽  
A. P. Vinogradov ◽  
A. V. Dorofeenko ◽  
A. A. Lisyansky
Keyword(s):  
Fluorescence Spectrum ◽  
Near Field ◽  
Resonance Fluorescence ◽  
Plasmonic Nanoparticle ◽  
Level Atom ◽  
Resonance Fluorescence Spectrum

Resonance Fluorescence and Photon Trapping of Two Atoms on a Metallic Surface

1983 ◽  
Vol 29 ◽  
Author(s):  
Xi-Yi Huang ◽  
K. C. Liu ◽  
Thomas F. George
Keyword(s):  
Laser Field ◽  
Resonance Excitation ◽  
Metallic Surface ◽  
Resonance Fluorescence ◽  
Gas Cell ◽  
Optical Bloch Equations ◽  
Atomic Collisions ◽  
Surface System ◽  
Photon Trapping ◽  
Resonance Fluorescence Spectrum

ABSTRACTSurface-dressed optical Bloch equations are derived for the purpose of evaluating the resonance fluorescence spectrum of two interacting identical atoms near or adsorbed on a metal surface. The derivation takes into account the influence of reflected photons, dephasing due to atomic collisions, the linewidth of the driving laser field and the resonance excitation of surface plasmons. A unique behavior of the surfacemodified fluorescence, not seen in analogous gas cell experiments, is predicted. Under the appropriate circumstance, a photon emitted from one of the two atoms can be trapped by the two-adatom-surface system, and this is studied by means of a theory which treats the atoms and their surface images on the same footing.

scholarly journals Effects of gap thickness and emitter location on the photoluminescence enhancement of monolayer MoS2 in a plasmonic nanoparticle-film coupled system

Nanophotonics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 2097-2105
Author(s):  
Xiaozhuo Qi ◽  
Tsz Wing Lo ◽  
Di Liu ◽  
Lantian Feng ◽  
Yang Chen ◽  
...  
Keyword(s):  
Near Field ◽  
Central Area ◽  
Field Enhancement ◽  
Coupled System ◽  
Film Structure ◽  
Plasmonic Nanoparticle ◽  
Emitter Location ◽  
Radiation Properties ◽  
Radiation Enhancement ◽  
Quantum Emitters

AbstractPlasmonic nanocavities comprised of metal film-coupled nanoparticles have emerged as a versatile nanophotonic platform benefiting from their ultrasmall mode volume and large Purcell factors. In the weak-coupling regime, the particle-film gap thickness affects the photoluminescence (PL) of quantum emitters sandwiched therein. Here, we investigated the Purcell effect-enhanced PL of monolayer MoS2 inserted in the gap of a gold nanoparticle (AuNP)–alumina (Al2O3)–gold film (Au Film) structure. Under confocal illumination by a 532 nm CW laser, we observed a 7-fold PL peak intensity enhancement for the cavity-sandwiched MoS2 at an optimal Al2O3 thickness of 5 nm, corresponding to a local PL enhancement of ∼350 by normalizing the actual illumination area to the cavity’s effective near-field enhancement area. Full-wave simulations reveal a counterintuitive fact that radiation enhancement comes from the non-central area of the cavity rather than the cavity center. By scanning an electric dipole across the nanocavity, we obtained an average radiation enhancement factor of about 65 for an Al2O3 spacer thickness of 4 nm, agreeing well with the experimental thickness and indicating further PL enhancement optimization. Our results indicate the importance of configuration optimization, emitter location and excitation condition when using such plasmonic nanocavities to modulate the radiation properties of quantum emitters.

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