Titlebook: Parity-time Symmetry and Its Applications; Demetrios Christodoulides,Jianke Yang Book 2018 Springer Nature Singapore Pte Ltd. 2018 Nonline

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Non-Hermitian Effects Due to Asymmetric Backscattering of Light in Whispering-Gallery Microcavities,ry of the cavity or perturbing it by other means, e.g. by placing small scatterers near the boundary, leads to coherent backscattering of these waves inside the cavity. In general, this backscattering is asymmetric, i.e. the strength of scattering from the clockwise to the counterclockwise propagati

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執(zhí)拗

小平面

Effects of Exceptional Points in PT-Symmetric Waveguides,ns, and .-symmetry is a property that can be achieved, e.g. by a coupling with the laser field. The resulting .-symmetric Hamiltonians possess a real spectrum (when the gain and loss are not too strong) and can be considered as a special case of pseudo-Hermitian Hamiltonians. The transition from a r

Herd-Immunity

Higher Order Exceptional Points in Discrete Photonics Platforms,ures, eventually leading to the more general notion of non-Hermitian photonics. Efforts to understand the behavior of these systems have revealed a host of distinct features originating from the unusual character of their eigenspectra and eigenstates. These include for example, spontaneous symmetry

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Non-Hermitian Optical Waveguide Couplers, We demonstrate that a nonlinear response can break the PT symmetry in a coupler, and discuss the regimes of parametric amplification and nonlocality associated with such systems. Then, we analyse non-Hermitical trimers and also a PT-symmetric system embedded into an array of waveguides. Finally, we

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Conducive

PT-Symmetry and Non-Hermitian Wave Transport in Microwaves and RF Circuits,ble framework of active electronic circuits. These include eigenmode analysis and spatio-temporal dynamics of the stored energy in static and in periodically driven (Floquet) .-symmetric circuits, and .-symmetric scattering in both the linear and nonlinear regime. We review several of these advances

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斜坡

Making the , Symmetry Unbreakable, the non-Hermitian part of the underlying Hamiltonian, exceeds a certain critical value. In this article, we present a summary of recently published and newly produced results which demonstrate various possibilities of extending the . symmetry to arbitrarily large values of the gain-loss coefficient