Trends in Quantum Nanophotonics

Huang, Lujun; Xu, Lei; Woolley, M. J.; Miroshnichenko, Andrey E.

doi:10.1002/qute.201900126

Cited by 41 publications

(21 citation statements)

References 337 publications

(168 reference statements)

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“…tonic devices, such as unidirectional waveguides and circulators [86,87], and our dimer model represents the simplest system which can exhibit such chirality.…”

Section: Chiral Couplingmentioning

confidence: 99%

Asymmetric coupling between two quantum emitters

et al. 2020

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We study a prototypical model of two coupled two-level systems, where the competition between coherent and dissipative coupling gives rise to a rich phenomenology. In particular, we analyze the case of asymmetric coupling, as well as the limiting case of chiral (or one-way) coupling. We investigate various quantum optical properties of the system, including its steady-state populations, power spectrum, and second-order correlation functions, and outline the characteristic features which emerge in each quantity as one sweeps through the nontrivial landscape of effective complex couplings. Most importantly, we reveal instances of population trapping, unexpected spectral features, and strong emission correlations.

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“…tonic devices, such as unidirectional waveguides and circulators [86,87], and our dimer model represents the simplest system which can exhibit such chirality.…”

Section: Chiral Couplingmentioning

confidence: 99%

Asymmetric coupling between two quantum emitters

et al. 2020

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“…Resonant phenomena instigated by photonic and plasmonic modes are extensively explored for light manipulations in numerous applications owing to the high optical density and enhanced interaction time possessed by such modes. [1,2] Diffractive photonic elements such as high contrast grating (HCG), [3] hybrid zero contrast grating, [4] and guided-mode resonance (GMR) [5] structures offer resonance modes with ultra-narrow bandwidth. Concurrently, the plasmonic mode is known for its excessive field confinement beyond the diffraction limit.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Optical Bound State in the Continuum in a Dielectric Grating Coupled Plasmonic Hybrid System

Joseph

Sarkar

Khan

et al. 2021

Advanced Optical Materials

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the hybridized modes arising from the coupling of photonic and plasmonic resonances have been investigated widely. [7] The hybridized modes realized in diverse configurations using defect modes, [8] plasmonic nano-cavities, [9] Fabry-Perot metallic trench resonator, [10] etc., successfully demonstrate improved outcomes in terms of sensitivity, figure of merit, confinement, and lightmatter interaction. [11] Very recently, it has been noticed that the interaction of two different optical channels leads to the formation of a bound state in the continuum (BIC) and a resultant quasi-BIC hybrid mode. [12] The BIC is considered as a confined state in an open system with an infinite quality factor (Q-factor), which can extensively interact with the radiation channel. [13] Although the concept of BIC was proposed by von Neumann and Wigner in 1921, [14] the experimental observation of its existence is manifested only in the last decades. [15,16] Nevertheless, a true BIC is a mathematical perception that one can never achieve with either quantum or classical systems using physical parameters. [16] Fundamentally, the BICs can be of two kinds; the symmetry protected BIC (SP-BIC) [4,17,18] and the accidental BICs. [19] The SP-BICs are the inherent nature of a wave system; they are the discrete modes in the Brillouin zone near the gamma (Γ) point and are not allowed to interact with the free space radiation due to its symmetry incompatibilities. [17] Conversely, the accidental BICs are the consequence of the interference phenomena. For a system with two different resonance phenomena continuously changing with the parametric variation, at one particular set of parameters, there may occur an avoided crossing through which both the modes can interact and interfere destructively, resulting in the vanishing of one of the modes with an infinite quality factor. [19] Such an accidental vanishing of modes is explained by the Friedrich-Wintgen scenario. [20] The SP-BIC can be accessed by symmetry breaking structure [21] or by oblique illumination, resulting in the generation of resonant modes with a huge Q-factor called the quasi-BIC. [22] Although a true BIC mode is a dark mode with infinite lifetime and zero line width, in reality, the Q-factor of the BIC is finite because of restricted dimension, losses, and imperfection in the fabricated system. Thus, only the quasi-BICs with finite spectral width and Q-factor can be realized experimentally. The quasi-BIC has been explored for numerous applications including compact photonic chip for communication, [23] extreme narrowband transmission spectrum, [4] lasing, [24] The bound state in the continuum (BIC) explores the extraordinary optical properties of a system possessing wave characteristics that gained recent importance for practical applications, including lasing, sensing, optical tweezing, nonlinear interactions, and many more. Unlike a pure optical or plasmonic system, a hybrid architecture with coupled photonicplasmonic characteristics can offer the intermittent resonant modes for s...

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“…As a peculiar resonant mode, [ 33 ] the bound state in the continuum (BIC) provides a perfect solution to resolve this issue. [ 34,35 ] BIC corresponds to a nonradiating resonant mode lying within the continuum spectrum. [ 35,36 ] The concept of BIC can be traced back to 1929, when von Neumann and Wigner found that an electronic BIC could be supported through carefully engineering the potential in a quantum system.…”

Section: Introductionmentioning

confidence: 99%

Strong Coupling of Exciton and High‐Q Mode in All‐Perovskite Metasurfaces

Al-Ani

As’ham

Huang

et al. 2021

Advanced Optical Materials

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Recently developed halide perovskite semiconductors are viewed as an excellent platform to realize exciton‐polariton at room temperature due to their large oscillation strength. Here, the optimized strong coupling between the exciton of perovskite and quasi‐bound state in the continuum (QBIC) with high‐quality factor (Q‐factor), supported by all‐perovskite metagrating, including magnetic dipole (MD)‐QBIC and toroidal dipole (TD)‐QBIC is demonstrated. By taking advantage of extreme electric field confinement enabled by a high‐Q mode, it is found that the maximum Rabi splitting can be enhanced up to a record high value of 400 meV, almost twice the Rabi splitting reported in the same perovskite‐based subwavelength metasurface. The simulation results reveal that both the Q‐factor of QBIC mode and the thickness of the perovskite metasurface play dominant roles in the enhanced strong coupling. It is also demonstrated that adding a protection layer of poly(methyl methacrylate) on the top of the perovskite metagrating has a negligible effect on the maximized Rabi‐splitting. These results suggest a new approach for studying exciton‐polaritons and may pave the way toward flexible, large‐scale, and low‐cost integrated polaritonic devices and the realization of polariton lasing at room temperature.

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Trends in Quantum Nanophotonics

Cited by 41 publications

References 337 publications

Asymmetric coupling between two quantum emitters

Asymmetric coupling between two quantum emitters

Exploring the Optical Bound State in the Continuum in a Dielectric Grating Coupled Plasmonic Hybrid System

Strong Coupling of Exciton and High‐Q Mode in All‐Perovskite Metasurfaces

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