Tunable topological valley transport in two-dimensional photonic crystals

Wang, Yujing; Zhang, Weixuan; Zhang, Xiangdong

doi:10.1088/1367-2630/ab3ca3

Cited by 37 publications

(18 citation statements)

References 47 publications

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“…Valley edge modes have also been studied in plasmonic systems, e.g., in surface-wave photonic crystal on a single metal surface [184], designer surface plasmon crystal comprising metallic patterns deposited on a dielectric substrate [185], graphene plasmonic crystals [186][187][188][189], metal nanoparticles [190] and metal cylinders [191]. Valley edge modes have found a range of interesting applications, such as, lasing [192][193][194][195][196], fiber [197,198], reconfigurable devices [199][200][201], slow light [202][203][204][205], chiral coupling to quantum emitters [206][207][208], Mach-Zehnder interferometer [209], on-chip quantum information processing [210], long-range deformations [211], and logic gates [212]. Especially, for topological lasing based on valley edge modes, recently, an electrically pumped terahertz quantum cascade laser was experimentally demonstrated in a triangular lattice of quasi-hexagonal holes drilled through the active medium of a terahertz quantum cascade laser wafer [192] (see Fig.…”

Section: Photonic Quantum Valley Hall Statesmentioning

confidence: 99%

A brief review of topological photonics in one, two, and three dimensions

Lan,

Chen,

Gao

et al. 2022

Preprint

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FIG. 2. 1D photonic SSH systems and their applications. (a) Near-field imaging of topological edge states in plasmonic nanochains. Reproduced with permission from [51], Copyright (2021), under CC BY-NC-ND. (b) Lasing at the topological edge states in a photonic crystal nanocavity dimer array. Reproduced with permission from [57], Copyright (2019), under CC BY 4.0. (c) Selective enhancement of interface states in a dielectric resonator chain. Reproduced with permission from [60], Copyright (2015), under CC BY 4.0. (d) Periodically bended ultrathin metallic waveguides for the observation of anomalous π modes via photonic floquet engineering. Reproduced with permission from [66], Copyright (2019) by the American Physical Society. (e) Protection of biphoton entanglement in an array of silicon nanowires. Reproduced with permission from [68], Copyright (2018) by the American Association for the Advancement of Science. (f) Photonic topological baths for quantum simulation. Reproduced with permission from [70], Copyright (2022) by the American Chemical Society. (g) Two coupled topological interfaces in waveguide arrays. Reproduced with permission from [72], Copyright (2020) by the American Chemical Society. (h) Selective excitation of topological edge states controlled by the handedness of incident light. Reproduced with permission from [76], Copyright (2016) by John Wiley and Sons.

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Section: Photonic Quantum Valley Hall Statesmentioning

confidence: 99%

A brief review of topological photonics in one, two, and three dimensions

Lan,

Chen,

Gao

et al. 2022

Preprint

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“…[ 19,111–113 ] In addition, there have been some works discussing tunable VPCs, opening a door toward dynamically reconfigurable topological nanophotonic devices. [ 111,114–116 ]…”

Section: Vpcs On Different Platformsmentioning

confidence: 99%

Topological Valley Photonics: Physics and Device Applications

Xue

Yang

Baile

2021

Advanced Photonics Research

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Topological photonics has emerged as a promising field in photonics that is able to shape the science and technology of light. As a significant degree of freedom, valley is introduced to design and construct photonic topological phases, with encouraging recent progress in applications ranging from on‐chip communications to terahertz lasers. Herein, the development of topological valley photonics is reviewed, from both perspectives of fundamental physics and practical applications. The unique valley‐contrasting physics determines that the bulk topology and the bulk‐boundary correspondence in valley photonic topological phases exhibit different properties from other photonic topological phases. Valley conservation allows not only robust propagation of light through sharp corners, but also 100% out‐coupling of topological states to the surrounding environment. Finally, robust valley transport requires no magnetic materials or the complex construction of photonic pseudospin and, thus, can be integrated on compact photonic platforms for future technologies.

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“…In order to analyze the origin of these phenomena, the distribution of the electric field at the interface with disorders is plotted in Fig. 3(c) when a chiral light source (marked with a star) [71] is put on the interface. We find that there is almost no backscattering with disorders.…”

Section: Topologically Protected Strong Coupling Between Distant Quan...mentioning

confidence: 99%

Topologically Protected Strong Coupling and Entanglement Between Distant Quantum Emitters

et al. 2020

Self Cite

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The realization of robust strong coupling and entanglement between distant quantum emitters (QEs) is very important for scalable quantum information processes. However, it is hard to achieve it based on conventional systems. Here, we propose theoretically and demonstrate numerically a scheme to realize such strong coupling and entanglement. Our scheme is based on the photonic crystal platform with topologically protected edge state and zero-dimensional topological corner cavities. When the QEs are put into topological cavities, the strong coupling between them can be fulfilled with the assistance of the topologically protected interface state. Such a strong coupling can maintain a very long distance and be robust against various defects. Especially, we numerically prove that the topologically protected entanglement between two QEs can also be realized. Moreover, the duration of quantum beats for such entanglement can reach several orders longer than that for the entanglement in a conventional photonic cavity, making it be very beneficial for a scalable quantum information process.

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Tunable topological valley transport in two-dimensional photonic crystals

Cited by 37 publications

References 47 publications

A brief review of topological photonics in one, two, and three dimensions

A brief review of topological photonics in one, two, and three dimensions

Topological Valley Photonics: Physics and Device Applications

Topologically Protected Strong Coupling and Entanglement Between Distant Quantum Emitters

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