Results 271 to 280 of about 394,492 (288)

Bound States in the Continuum in Photonics

Physical Review Letters, 2008
With examples of two parallel dielectric gratings and two arrays of thin parallel dielectric cylinders, it is shown that the interaction between trapped electromagnetic modes can lead to scattering resonances with practically zero width. Such resonances are the bound states in the radiation continuum first discovered in quantum systems by von Neumann ...
D C, Marinica, A G, Borisov, S V, Shabanov   +2 more
openaire   +2 more sources

Bound states in the continuum

Physical Review A, 1975
Quantum-mechanical examples have been constructed of local potentials with bound eigenstates embedded in the dense continuum of scattering states. The method employed corrects and extends a procedure invented by von Neumann and Wigner. Cases are cited whereby deformation of the local potential causes the continuum bound state to move downward through ...
Frank H. Stillinger, David R. Herrick
openaire   +1 more source

Multibranch Elastic Bound States in the Continuum

Physical Review Letters
Constructing a highly localized wave field by means of bound states in the continuum (BICs) promotes enhanced wave-matter interaction and offers approaches to high-sensitivity devices. Elastic waves can carry complex polarizations and thus differ from electromagnetic waves and other scalar mechanical waves in the formation of BICs, which is yet to be ...
Shuowei An, Tuo Liu, Liyun Cao, Zhongming Gu, Haiyan Fan, Yi Zeng, Li Cheng, Jie Zhu, Badreddine Assouar   +8 more
openaire   +3 more sources

Physical realization of bound states in the continuum

Physical Review A, 1985
We show within the framework of quantum-defect theory that bound states in the continuum (BIC) can occur in systems of at least three coupled Coulombic channels due to the interference of resonances belonging to different channels. As a physical realization of such BIC, we discuss the Schr\"odinger equation describing a hydrogen atom in a uniform ...
, Friedrich, , Wintgen
openaire   +2 more sources

Bound States in the Continuum in Anisotropic Plasmonic Metasurfaces

Nano Letters, 2020
The concept of optical bound states in the continuum (BICs) currently drives the field of dielectric resonant nanophotonics, providing an important physical mechanism for engineering high-quality (high-Q) optical resonances in high-index dielectric nanoparticles and structured dielectric metasurfaces.
Yao Liang, Kirill Koshelev, Fengchun Zhang, Han Lin, Shirong Lin, Jiayang Wu, Baohua Jia, Yuri Kivshar   +7 more
openaire   +3 more sources

Interfering resonances and bound states in the continuum

Physical Review A, 1985
We use Feshbach's theory of resonances to demonstrate that bound states in the continuum (BIC's) can occur due to the interference of resonances belonging to different channels. If two resonances pass each other as a function of a continuous parameter, then interference causes an avoided crossing of the resonance positions and for a given value of the ...
, Friedrich, , Wintgen
openaire   +2 more sources

Non-Abelian Topological Bound States in the Continuum

Physical Review Letters
Bound states in the continuum (BICs), which are spatially localized states with energies lying in the continuum of extended modes, have been widely investigated in both quantum and classical systems. Recently, the combination of topological band theory with BICs has led to the creation of topological BICs that exhibit extraordinary robustness against ...
Long Qian, Weixuan Zhang, Houjuan Sun, Xiangdong Zhang   +3 more
openaire   +2 more sources

On the bound states in the continuum

Physics Letters A, 1977
Abstract It is shown that a special case of the amplitude modulation method of von Neumann and Wigner for constructing local potentials and normalizable wavefunctions of bound states in the continuum, and the formal use of the Gelfand-Levitan theory lead to the same results. A possible application for complex-energy resonance models is indicated.
openaire   +1 more source

Topologically Protected Plasmonic Bound States in the Continuum

Nano Letters
Experimental realizations of bound states in the continuum (BICs) with strong robustness and advanced maneuverability in optical loss systems remain a long-standing challenge in nanophotonics. Here, we propose and fabricate a paradigm of diatomic metagratings incorporating the Su-Schrieffer-Heeger model into the design of plasmonic nanocavities to ...
Shaoxin Shen, Wenxuan Liu, Jiangle He, Hui Chen, Chao Xie, Qinghao Ge, Guangxu Su, Fanxin Liu, Yasi Wang, Guoya Sun, Zhilin Yang   +10 more
openaire   +2 more sources

Photonic Bound States in the Continuum: From Basics to Applications

Advanced Optical Materials, 2021
Shaimaa I Azzam, Alexander V Kildishev
exaly