Fusing electromagnetic one-way edge states to achieve broadband unidirectional wave transmission

Li, Zhen; Wu, Rui‐Xin; Poo, Yin; Lin, Zhifang; Li, Qingbo

doi:10.1088/2040-8978/16/12/125004

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…As further features of topological edge states, it was later shown that they can self-guide in air (Ao et al, 2009;Li et al, 2015cLi et al, , 2014bLiu et al, 2012;Lu et al, 2013a;Poo et al, 2011), appear in coupled defect cavities (Fang et al, 2011), have robust local density of states (Asatryan et al, 2013(Asatryan et al, , 2014, be modeled in time domain (Li et al, 2013), self-collimate unidirectionally (Li et al, 2015a), be realized in materials of Tellegen magnetoelectric couplings (He et al, 2016b;Jacobs et al, 2015;Ochiai, 2015b;Sun et al, 2017b), form bulk flat bands (Yang et al, 2017b,c), and be immune to disorder in the bulk (Mansha and Chong, 2017;Xiao and Fan, 2017a). Remarkably, while it was previously known that one-way modes can exist on the surfaces of continuous magnetic media (Deng et al, 2015;Gangaraj and Hanson, 2017;Hartstein et al, 1973;Ochiai, 2015a;Shen et al, 2015;Yu et al, 2014Yu et al, , 2008Zhang et al, 2012), the topological origin of these modes was only recently unveiled (Silveirinha, 2015(Silveirinha, , 2016a.…”

Section: Gyromagnetic Photonic Crystalsmentioning

confidence: 99%

Topological Photonics

Ozawa,

Price,

Amo

et al. 2018

Preprint

142

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Topological photonics is a rapidly emerging field of research in which geometrical and topological ideas are exploited to design and control the behavior of light. Drawing inspiration from the discovery of the quantum Hall effects and topological insulators in condensed matter, recent advances have shown how to engineer analogous effects also for photons, leading to remarkable phenomena such as the robust unidirectional propagation of light, which hold great promise for applications. Thanks to the flexibility and diversity of photonics systems, this field is also opening up new opportunities to realize exotic topological models and to probe and exploit topological effects in new ways. This article reviews experimental and theoretical developments in topological photonics across a wide range of experimental platforms, including photonic crystals, waveguides, metamaterials, cavities, optomechanics, silicon photonics, and circuit QED. A discussion of how changing the dimensionality and symmetries of photonics systems has allowed for the realization of different topological phases is offered, and progress in understanding the interplay of topology with non-Hermitian effects, such as dissipation, is reviewed. As an exciting perspective, topological photonics can be combined with optical nonlinearities, leading toward new collective phenomena and novel strongly correlated states of light, such as an analog of the fractional quantum Hall effect. 4. Nonmagnetic designs 54 C. Toward even higher dimensions 55 1. Synthetic dimensions 55 2. Four-dimensional quantum Hall effect 56 VI. Gain and loss in topological photonics 56 A. Non-Hermitian topological photonics 56 B. Emergent topology of Bogoliubov modes 57 VII. Topological effects for interacting photons 58 A. Weak nonlinearities 59 B. Strong nonlinearities 60 VIII. Conclusion and perspectives 62 A. Optical isolation and robust transport 62 B. Quantum emitters and topological laser 63 1. Topological lasers: Theory 63 2. Topological lasers: Experiments 63 C. Measurement of bulk topological and geometrical properties 64 D. Topological quantum computing 65 Acknowledgments 65 References 66

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Section: Gyromagnetic Photonic Crystalsmentioning

confidence: 99%

Topological Photonics

Ozawa,

Price,

Amo

et al. 2018

Preprint

142

View full text Add to dashboard Cite

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Trends in Quantum Nanophotonics

Huang

Woolley

et al. 2020

Adv Quantum Tech

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In this review, the nexus of nanophotonics and quantum science is considered. This nexus offers a wealth of applications and novel fundamental effects. Such an interdisciplinary approach may serve as a starting point for developing groundbreaking technologies. Several new directions in quantum nanophotonics are addressed, including strong light-matter coupling, bound states in the continuum, topological photonics, metasurfaces and photon sources, and levitated optomechanics. This review hopefully will foster the enhanced interaction between the nanophotonics and quantum science communities. Such a synergy will lead to the realization of novel communication, sensing, and information processing systems.

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Unidirectional transport of wave packets through tilted discrete breathers in nonlinear lattices with asymmetric defects

2016

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We consider the transfer of lattice wave packets through a tilted discrete breather (TDB) in opposite directions in the discrete nonlinear Schrödinger model with asymmetric defects, which may be realized as a Bose-Einstein condensate trapped in a deep optical lattice, or as optical beams in a waveguide array. A unidirectional transport mode is found, in which the incident wave packets, whose energy belongs to a certain interval between full reflection and full passage regions, pass the TDB only in one direction, while in the absence of the TDB, the same lattice admits bidirectional propagation. The operation of this mode is accurately explained by an analytical consideration of the respective energy barriers. The results suggest that the TDB may emulate the unidirectional propagation of atomic and optical beams in various settings. In the case of the passage of the incident wave packet, the scattering TDB typically shifts by one lattice unit in the direction from which the wave packet arrives, which is an example of the tractor-beam effect, provided by the same system, in addition to the rectification of incident waves.

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Fusing electromagnetic one-way edge states to achieve broadband unidirectional wave transmission

Cited by 5 publications

References 24 publications

Topological Photonics

Topological Photonics

Trends in Quantum Nanophotonics

Unidirectional transport of wave packets through tilted discrete breathers in nonlinear lattices with asymmetric defects

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