Results 41 to 50 of about 392,529 (145)
Nanomaterials, 2023 The two main problems of dielectric metasurfaces for sensing and spectroscopy based on electromagnetic field enhancement are that resonances are mainly localized inside the resonator volume and that experimental Q-factors are very limited.
José Francisco Algorri +3 more
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Bound states in the continuum in open Aharonov-Bohm rings
, 2006 Using formalism of effective Hamiltonian we consider bound states in continuum (BIC). They are those eigen states of non-hermitian effective Hamiltonian which have real eigen values. It is shown that BICs are orthogonal to open channels of the leads, i.e.
A. F. Sadreev +27 more
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Nonradiating photonics with resonant dielectric nanostructures
Nanophotonics, 2019 Nonradiating sources of energy have traditionally been studied in quantum mechanics and astrophysics but have received very little attention in the photonics community. This situation has changed recently due to a number of pioneering theoretical studies
Koshelev Kirill +4 more
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Optical lattices with exceptional points in the continuum
, 2014 The spectral, dynamical and topological properties of physical systems described by non-Hermitian (including $\mathcal{PT}$-symmetric) Hamiltonians are deeply modified by the appearance of exceptional points and spectral singularities.
Della Valle, G., Longhi, S.
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Nanophotonics, 2020 Photonic bound states in the continuum (BICs) are eigenmodes with an infinite lifetime, which coexist with a continuous spectrum of radiating waves. BICs are not only of great theoretical interest but also have a wide range of practical applications, e.g.
Bykov Dmitry A. +2 more
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All-dielectric metasurfaces with high Q-factor Fano resonances enabling multi-scenario sensing
Nanophotonics, 2022 We propose and numerically demonstrate high Q-factor sensors based on all-dielectric metasurfaces, which are very sensitive to the change of the refractive index of the surrounding media and the incident angle.
Chen Xueer +5 more
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Encrypting Majorana Fermions-qubits as Bound States in the Continuum
, 2017 We theoretically investigate a topological Kitaev chain connected to a double quantum-dot (QD) setup hybridized with metallic leads. In this system we observe the emergence of two striking phenomena: (i) a decrypted Majorana fermion (MF) qubit recorded ...
de Souza, M. +7 more
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New Journal of Physics, 2019 To achieve a high degree of quantum noise squeezing, nonlinear optical interaction process is often employed. Here, we propose to utilize quasi-bound states in the continuum (quasi-BICs) and Fano resonances to enhance optical squeezing without ...
Zhixin Li, Xiangdong Zhang
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Nanophotonics, 2020 Actively tunable and reconfigurable wavefront shaping by optical metasurfaces poses a significant technical challenge often requiring unconventional materials engineering and nanofabrication.
Malek Stephanie C. +3 more
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Nanophotonics, 2023 All-dielectric metasurfaces have great potential as highly sensitive refractometric sensors relying on their spectral shifts because of an extensive range of design flexibilities and their smaller absorption losses than plasmonic platforms.
Watanabe Keisuke, Iwanaga Masanobu
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