Dynamical Casimir–Polder force in a semi-infinite rectangle waveguide

Laser Physics ◽  
2022 ◽  
Vol 32 (2) ◽  
pp. 025203
Author(s):  
Zhe Jin ◽  
Tian Tian ◽  
Wentao Wang ◽  
Yumei Long ◽  
Xue Zhang ◽  
...  
Keyword(s):  
Casimir Force ◽  
Quantum Effect ◽  
Dynamical Behavior ◽  
Energy Shift ◽  
Heisenberg Equation ◽  
Infinite Length ◽  
Photon Propagation ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Rotating Wave

Abstract In this paper, we study the dynamical Casimir–Polder force between an ensemble of identical two-level atoms and the wall of a rectangle waveguide with semi-infinite length. With the presence of both the rotating wave and counter rotating wave terms in the light–matter interaction Hamiltonian, we utilize the perturbation theory to solve the Heisenberg equation. Up to the seconder of coupling strength, we obtain the energy shift analytically and the Casimir–Polder force numerically. Our result shows that the dynamical behavior of the Casimir force is closely connected to the photon propagation in the waveguide. Therefore, we hope this work will stimulate the studies about the quantum effect in waveguide scenario.

Quantum description of light–matter coupling

2017 ◽  
Author(s):  
Alexey V. Kavokin ◽  
Jeremy J. Baumberg ◽  
Guillaume Malpuech ◽  
Fabrice P. Laussy
Keyword(s):  
Cavity Mode ◽  
Optical Field ◽  
Level System ◽  
Bloch Equations ◽  
Optical Bloch Equations ◽  
Matter Coupling ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Full Quantum ◽  
The Ideal

In this chapter we study with the tools developed in Chapter 3 the basic models that are the foundations of light–matter interaction. We start with Rabi dynamics, then consider the optical Bloch equations that add phenomenologically the lifetime of the populations. As decay and pumping are often important, we cover the Lindblad form, a correct, simple and powerful way to describe various dissipation mechanisms. Then we go to a full quantum picture, quantizing also the optical field. We first investigate the simpler coupling of bosons and then culminate with the Jaynes–Cummings model and its solution to the quantum interaction of a two-level system with a cavity mode. Finally, we investigate a broader family of models where the material excitation operators differ from the ideal limits of a Bose and a Fermi field.

scholarly journals Surface plasmon polariton–enhanced photoluminescence of monolayer MoS2 on suspended periodic metallic structures

Nanophotonics ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 975-982
Author(s):  
Huanhuan Su ◽  
Shan Wu ◽  
Yuhan Yang ◽  
Qing Leng ◽  
Lei Huang ◽  
...  
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polariton ◽  
Plasmonic Nanostructures ◽  
Metallic Nanoparticle ◽  
Systematic Analysis ◽  
Excitation Rate ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Plasmon Polariton ◽  
Plasmonic Effects

AbstractPlasmonic nanostructures have garnered tremendous interest in enhanced light–matter interaction because of their unique capability of extreme field confinement in nanoscale, especially beneficial for boosting the photoluminescence (PL) signals of weak light–matter interaction materials such as transition metal dichalcogenides atomic crystals. Here we report the surface plasmon polariton (SPP)-assisted PL enhancement of MoS2 monolayer via a suspended periodic metallic (SPM) structure. Without involving metallic nanoparticle–based plasmonic geometries, the SPM structure can enable more than two orders of magnitude PL enhancement. Systematic analysis unravels the underlying physics of the pronounced enhancement to two primary plasmonic effects: concentrated local field of SPP enabled excitation rate increment (45.2) as well as the quantum yield amplification (5.4 times) by the SPM nanostructure, overwhelming most of the nanoparticle-based geometries reported thus far. Our results provide a powerful way to boost two-dimensional exciton emission by plasmonic effects which may shed light on the on-chip photonic integration of 2D materials.

scholarly journals Linewidth narrowing of aluminum breathing plasmon resonances in Bragg gratings decorated nanodisks

2021 ◽  
Author(s):  
Xiaomin Zhao ◽  
Chenglin Du ◽  
Rong Leng ◽  
Li Li ◽  
Weiwei Luo ◽  
...  
Keyword(s):  
Light Emission ◽  
Emission Control ◽  
Bragg Gratings ◽  
High Quality ◽  
Plasmon Resonances ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Radiative Losses

Plasmon resonances with high-quality are of great importance in light emission control and light-matter interaction. Nevertheless, the inherent Ohmic and radiative losses usually hinder the plasmon performance of the metallic...

scholarly journals Light–matter interaction of a molecule in a dissipative cavity from first principles

2021 ◽  
Vol 154 (10) ◽  
pp. 104109
Author(s):  
Derek S. Wang ◽  
Tomáš Neuman ◽  
Johannes Flick ◽  
Prineha Narang
Keyword(s):  
First Principles ◽  
Matter Interaction ◽  
Light Matter Interaction

scholarly journals Optical switching of topological phase in a perovskite polariton lattice

2021 ◽  
Vol 7 (21) ◽  
pp. eabf8049
Author(s):  
Rui Su ◽  
Sanjib Ghosh ◽  
Timothy C. H. Liew ◽  
Qihua Xiong
Keyword(s):  
Optical Switching ◽  
Room Temperature ◽  
Optical Pumping ◽  
Optical Nonlinearity ◽  
Edge States ◽  
Ambient Conditions ◽  
Strong Light ◽  
Exciton Polaritons ◽  
Matter Interaction ◽  
Light Matter Interaction

Strong light-matter interaction enriches topological photonics by dressing light with matter, which provides the possibility to realize active nonlinear topological devices with immunity to defects. Topological exciton polaritons—half-light, half-matter quasiparticles with giant optical nonlinearity—represent a unique platform for active topological photonics. Previous demonstrations of exciton polariton topological insulators demand cryogenic temperatures, and their topological properties are usually fixed. Here, we experimentally demonstrate a room temperature exciton polariton topological insulator in a perovskite zigzag lattice. Polarization serves as a degree of freedom to switch between distinct topological phases, and the topologically nontrivial polariton edge states persist in the presence of onsite energy perturbations, showing strong immunity to disorder. We further demonstrate exciton polariton condensation into the topological edge states under optical pumping. These results provide an ideal platform for realizing active topological polaritonic devices working at ambient conditions, which can find important applications in topological lasers, optical modulation, and switching.

Light–matter interaction at atomic scales

2021 ◽  
Author(s):  
Rico Gutzler ◽  
Manish Garg ◽  
Christian R. Ast ◽  
Klaus Kuhnke ◽  
Klaus Kern
Keyword(s):  
Matter Interaction ◽  
Light Matter Interaction

scholarly journals Bistable dynamics beyond rotating wave approximation

2014 ◽  
Vol 23 (02) ◽  
pp. 1450019 ◽  
Author(s):  
Y. A. Sharaby ◽  
S. Lynch ◽  
A. Joshi ◽  
S. S. Hassan
Keyword(s):  
Ring Cavity ◽  
Dynamical Behavior ◽  
Single Mode ◽  
Unstable State ◽  
Nonlinear Dynamical ◽  
Rotating Wave Approximation ◽  
Wave Approximation ◽  
Atomic Medium ◽  
Bistable Dynamics ◽  
Rotating Wave

In this paper, we investigate the nonlinear dynamical behavior of dispersive optical bistability (OB) for a homogeneously broadened two-level atomic medium interacting with a single mode of the ring cavity without invoking the rotating wave approximation (RWA). The periodic oscillations (self-pulsing) and chaos of the unstable state of the OB curve is affected by the counter rotating terms through the appearance of spikes during its periods. Further, the bifurcation with atomic detuning, within and outside the RWA, shows that the OB system can be converted from a chaotic system to self-pulsing system and vice-versa.

scholarly journals Elongated-Hexagonal Photonic Crystal for Buffering, Sensing, and Modulation

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 809
Author(s):  
Sayed Elshahat ◽  
Israa Abood ◽  
Zixian Liang ◽  
Jihong Pei ◽  
Zhengbiao Ouyang
Keyword(s):  
Photonic Crystal ◽  
Irregular Waveguide ◽  
Optical Confinement ◽  
Physical Size ◽  
External Voltage ◽  
Dynamic Modulation ◽  
Highly Sensitive ◽  
Matter Interaction ◽  
Light Matter Interaction ◽  
Higher Sensitivity

A paradigm for high buffering performance with an essential fulfillment for sensing and modulation was set forth. Through substituting the fundamental two rows of air holes in an elongated hexagonal photonic crystal (E-PhC) by one row of the triangular gaps, the EPCW is molded to form an irregular waveguide. By properly adjusting the triangle dimension solitary, we fulfilled the lowest favorable value of the physical-size of each stored bit by about μ5.5510 μm. Besides, the EPCW is highly sensitive to refractive index (RI) perturbation attributed to the medium through infiltrating the triangular gaps inside the EPCW by microfluid with high RI sensitivity of about 379.87 nm/RIU. Furthermore, dynamic modulation can be achieved by applying external voltage and high electro-optical (EO) sensitivity is obtained of about 748.407 nm/RIU. The higher sensitivity is attributable to strong optical confinement in the waveguide region and enhanced light-matter interaction in the region of the microfluid triangular gaps inside the EPCW and conventional gaps (air holes). The EPCW structure enhances the interaction between the light and the sensing medium.

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