scholarly journals Double Rabi Splitting in a Strongly Coupled System of Core–Shell Au@Ag Nanorods and J-Aggregates of Multiple Fluorophores

2019 ◽  
Vol 10 (20) ◽  
pp. 6137-6143 ◽  
Author(s):  
Dzmitry Melnikau ◽  
Alexander A. Govyadinov ◽  
Ana Sánchez-Iglesias ◽  
Marek Grzelczak ◽  
Igor R. Nabiev ◽  
...  
Keyword(s):  
Coupled System ◽  
Core Shell ◽  
Rabi Splitting ◽  
Strongly Coupled ◽  
J Aggregates

Quantum mechanical solution to spectral lineshape in strongly-coupled atomnanocavity system

2021 ◽  
Author(s):  
JIAN ZENG ◽  
ZHI-YUAN LI
Keyword(s):  
Integrated Circuits ◽  
Quantum Electrodynamics ◽  
Single Photon ◽  
Quantum Effect ◽  
Coupled System ◽  
Cavity Quantum Electrodynamics ◽  
Quantum Model ◽  
Rabi Splitting ◽  
Strongly Coupled ◽  
Spectral Lineshape

Abstract The strongly coupled system composed of atoms, molecules, molecule aggregates, and semiconductor quantum dots embedded within an optical microcavity/nanocavity with high quality factor and/or low modal volume has become an excellent platform to study cavity quantum electrodynamics (CQED), where a prominent quantum effect called Rabi splitting can occur due to strong interaction of cavity-mode single-photon with the two-level atomic states. In this paper, we build a new quantum model that can describe the optical response of the strongly-coupled system under the action of an external probing light and the spectral lineshape. We take the Hamiltonian for the strongly-coupled photon-atom system as the unperturbed Hamiltonian H 0 and the interaction Hamiltonian of the probe light upon the coupled-system quantum states as the perturbed Hamiltonian V. The theory yields a double Lorentzian lineshape for the permittivity function, which agrees well with experimental observation of Rabi splitting in terms of spectral splitting. This quantum theory will pave the way to construct a complete understanding for the microscopic strongly-coupled system that will become an important element for quantum information processing, nano-optical integrated circuits, and polariton chemistry.

The role of Rabi splitting tuning in the dynamics of strongly coupled J-aggregates and surface plasmon polaritons in nanohole arrays

Nanoscale ◽  
2016 ◽  
Vol 8 (27) ◽  
pp. 13445-13453 ◽  
Author(s):  
Hai Wang ◽  
Andrea Toma ◽  
Hai-Yu Wang ◽  
Angelo Bozzola ◽  
Ermanno Miele ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Rabi Splitting ◽  
Strongly Coupled ◽  
Nanohole Arrays ◽  
J Aggregates ◽  
Plasmon Polaritons

Splitting in lateral shift induced by strong coupling in Kretschmann configuration involving molecular J-aggregates

2019 ◽  
Vol 33 (30) ◽  
pp. 1950370
Author(s):  
Kunwei Pang ◽  
Haihong Li ◽  
Gang Song ◽  
Pengfei Zhang
Keyword(s):  
Strong Coupling ◽  
Metal Film ◽  
Previous Experiment ◽  
Lateral Shift ◽  
Phase Method ◽  
Stationary Phase Method ◽  
Incident Wavelength ◽  
Rabi Splitting ◽  
Kretschmann Configuration ◽  
J Aggregates

Molecular J-aggregates are widely used as emitters to achieve the quantum effects, such as the strong coupling phenomenon. We investigate the lateral shift splitting/Goos–Hänchen (GH) shift splitting induced by strong coupling in Kretschmann configuration involving molecular J-aggregates by using classical methods. The optical response of molecular J-aggregates is modeled by a single Lorentzian oscillator, and Fresnel equations and the stationary phase method are employed to solve our proposed structure. Our results show that the lateral shift versus the incident wavelength shows Rabi splitting-like line shape and the reflection spectrum exhibits the strong coupling phenomenon. Based on the results of the previous experiment work, we well explain the relation between Rabi splitting and the thickness of the metal film and provide a new method to choose the parameters of the structure for experiment.

Article

1999 ◽  
Vol 77 (11) ◽  
pp. 1810-1812 ◽  
Author(s):  
Alex D Bain
Keyword(s):  
Spin System ◽  
Coupled System ◽  
Coupled Systems ◽  
Physical Reason ◽  
Strongly Coupled ◽  
System Combination ◽  
First Order ◽  
Weakly Coupled ◽  
Quantum Transitions ◽  
Weakly Coupled Systems

Strongly coupled spin systems provide many curious and interesting effects in NMR spectra, one of which is the presence of unexpected (from a first-order viewpoint) lines. A physical reason is given for the presence of these combination lines. The X part of the spectrum of an ABX spin system is analysed as an example. For an ABX system, it is well known that the AB nuclei give a spectrum consisting of two AB-type spectra, corresponding to the two orientations of the X nucleus. It can also be shown that the X part of the spectrum corresponds to the X nucleus undergoing a transition in the presence of an AB-like spin system. For weakly coupled systems, the four observed lines correspond to the four different orientations of the A and B nuclei. For a strongly coupled system, two additional lines may appear, the combination lines. The resulting six lines correspond to the four spin orientations, plus the two zero-quantum transitions. It is shown that these six lines are such that there is no net excitation of the AB-like spin system associated with the X transitions. There is no AB coherence created directly by a pulse applied to X. AB coherence is created as the system evolves, and this is responsible for many of the curious effects. This is shown to be true for all spin sub-systems, which are weakly coupled to a strongly coupled sub-system.Key words: NMR, strong coupling, second-order spectra, ABX spin system, combination lines, spectral analysis.

scholarly journals Scale-free vortex cascade emerging from random forcing in a strongly coupled system

2008 ◽  
Vol 10 (9) ◽  
pp. 093018 ◽  
Author(s):  
K Rypdal ◽  
B Kozelov ◽  
S Ratynskaia ◽  
B Klumov ◽  
C Knapek ◽  
...  
Keyword(s):  
Coupled System ◽  
Free Vortex ◽  
Strongly Coupled ◽  
Scale Free ◽  
Random Forcing ◽  
Vortex Cascade

scholarly journals Strong Plasmon–Exciton Coupling in Ag Nanoparticle—Conjugated Polymer Core-Shell Hybrid Nanostructures

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2141
Author(s):  
Christopher E. Petoukhoff ◽  
Keshav M. Dani ◽  
Deirdre M. O’Carroll
Keyword(s):  
Conjugated Polymers ◽  
Conjugated Polymer ◽  
Optoelectronic Devices ◽  
Hybrid Nanostructures ◽  
Oscillator Strengths ◽  
Metal Nanostructures ◽  
Core Shell ◽  
Exciton Coupling ◽  
J Aggregates ◽  
Organic Optoelectronic

Strong plasmon–exciton coupling between tightly-bound excitons in organic molecular semiconductors and surface plasmons in metal nanostructures has been studied extensively for a number of technical applications, including low-threshold lasing and room-temperature Bose-Einstein condensates. Typically, excitons with narrow resonances, such as J-aggregates, are employed to achieve strong plasmon–exciton coupling. However, J-aggregates have limited applications for optoelectronic devices compared with organic conjugated polymers. Here, using numerical and analytical calculations, we demonstrate that strong plasmon–exciton coupling can be achieved for Ag-conjugated polymer core-shell nanostructures, despite the broad spectral linewidth of conjugated polymers. We show that strong plasmon–exciton coupling can be achieved through the use of thick shells, large oscillator strengths, and multiple vibronic resonances characteristic of typical conjugated polymers, and that Rabi splitting energies of over 1000 meV can be obtained using realistic material dispersive relative permittivity parameters. The results presented herein give insight into the mechanisms of plasmon–exciton coupling when broadband excitonic materials featuring strong vibrational–electronic coupling are employed and are relevant to organic optoelectronic devices and hybrid metal–organic photonic nanostructures.

scholarly journals Preparation and properties of plasmonic-excitonic nanoparticle assemblies

Nanophotonics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 517-547 ◽  
Author(s):  
Brian Szychowski ◽  
Matthew Pelton ◽  
Marie-Christine Daniel
Keyword(s):  
Good Control ◽  
Inorganic Nanoparticles ◽  
Rabi Splitting ◽  
Strongly Coupled ◽  
Nanoparticle Assemblies ◽  
Wide Range ◽  
Fano Interference ◽  
Potential Applications ◽  
The Individual ◽  
Number Of Particles

AbstractThe assembly of inorganic nanoparticles often leads to collective properties that are different from the combined properties of the individual components. In particular, coupling plasmonic and excitonic nanoparticles has been shown to modify their optical properties, including absorption, emission, and scattering. Because of this, these coupled assemblies have potential applications in a wide range of areas, including sensing, light harvesting, and photocatalysis. More recently, unique properties, including Fano interference and Rabi splitting, have been observed by increasing the coupling strength. However, the behavior of coupled nanoparticles is highly dependent on the exact organization of the components, including the number of particles coupled, the distance separating them, and their spatial orientation. This is especially true in the case of strongly coupled particles. Because of this, it is important to achieve synthetic techniques that not only can link particles together but also offer good control over how the particles are connected. In this review, assemblies of plasmonic and excitonic nanoparticles are reviewed, including the various methods that have been used for their construction, the properties that these systems have been predicted to possess as well as the ones that have been observed, and their current applications along with current challenges in the field and potential future applications.

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