Higher-order topological biphoton corner states in two-dimensional photonic lattices

Li, Chu; Li, Meng; Yan, Linyu; Ye, Sheng; Hu, Xiaoyong; Gong, Qihuang; Li, Yudong

doi:10.1103/physrevresearch.4.023049

Cited by 13 publications

(4 citation statements)

References 58 publications

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“…Similar higher‐order topological corner states were later realized in the breathing kagome waveguide array, [ 80 ] square waveguide array, [ 69,70 ] decorated honeycomb waveguide array, [ 73 ] and helical waveguide array. [ 104 ] This class of corner states is generally topologically protected by spatial symmetries.…”

Section: Topological Phases In the Photonic Waveguide Arraysmentioning

confidence: 99%

Topological Photonic States in Waveguide Arrays

Kang

Wei

Zhang

et al. 2022

Advanced Physics Research

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Topological photonics, accompanied by the ability to manipulate light, has emerged as a rapidly growing field of research. More platforms for displaying novel topological photonic states are being explored, thus offering efficient strategies for the realization of robust photonic devices. Optical waveguide arrays, described as a (n+1)‐dimensional system, are ideal platforms for studying topological photonics because of the characteristic that can exhibit light dynamics. Here, this work reviews the experimental implementations of the various topological phases in the optical waveguide arrays, and specifically discusses novel physical phenomena arising from the combination of topology with non‐Hermitianity and nonlinearity. It is believed that topological waveguide arrays provide powerful support for enriching topological physics and promoting the development of topological photonic integrated devices.

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Section: Topological Phases In the Photonic Waveguide Arraysmentioning

confidence: 99%

Topological Photonic States in Waveguide Arrays

Kang

Wei

Zhang

et al. 2022

Advanced Physics Research

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“…It is experimentally simulated using an asymmetric three-dimensional (3D) photonic lattice, for the first time, to uncover how the excitation energy propagates between the seven BChla molecules, including both neighboring and non-neighboring interactions. The optical simulator is realized by a 3D waveguide array fabricated by the femtosecond laser direct writing (FLDW) − possessing true 3D micromachining capability. − By converting the temporal ( t ) energy transport into the spatial ( l ) evolution of light in waveguides through l = ct , − we can intuitively reveal the efficient CET dynamics by excitation of BChl-6, which paves the way for its application to more integrated artificial light-harvesting devices, even multiport light harvesters.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast Coherent Energy Transport of Fenna–Matthews–Olson Complex in a 3D Photonic Lattice

Yan,

Li,

et al. 2023

J. Phys. Chem. C

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The coherent energy transport phenomenon inside the light-harvesting antenna like the Fenna−Matthews−Olson (FMO) complex has always been vital and attractive but elusive to investigate directly due to the complex organisms and the ultrafast transport process. Therefore, researchers have focused on the interaction of the FMO complex as a whole with the environment or the theoretical study of its dynamics. Here, we experimentally verify the theoretical system of ultrafast coherent energy transport among seven chlorophyll molecules within FMO with a threedimensional photonic lattice directly written by the femtosecond laser to intuitively uncover the dynamic process between chlorophyll molecules under both neighboring and non-neighboring interactions. The high similarities between the theoretical and experimental results demonstrate the precise positional layout control of the photonic lattices. These achievements will lead to a deep understanding of the mechanism and promising applications in the construction of more efficient integrated optical devices for artificial light energy transport.

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“…In 2018, the group of Jin demonstrated the quantum transport in fractal networks constructed by straight waveguide arrays 24 , where they used the coherent light beam instead of single photons to perform continuous-time quantum walks. So far, all experimental works on quantum state transport in laser direct-written photonic TIs have been limited to the zero-dimensional topological bound states, such as topological boundary states in one-dimensional (1D) SSH models or Harper models 25 – 29 , and corner states in 2D higher-order TIs 30 , 31 , exhibiting no topological edge transport properties.…”

Section: Introductionmentioning

confidence: 99%

Fractal photonic anomalous Floquet topological insulators to generate multiple quantum chiral edge states

Li,

Yan

et al. 2023

Light Sci Appl

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Anomalous Floquet topological insulators with vanishing Chern numbers but supporting chiral edge modes are attracting more and more attention. Since the existing anomalous Floquet topological insulators usually support only one kind of chiral edge mode even at a large lattice size, they are unscalable and unapplicable for multistate topological quantum systems. Recently, fractal topological insulators with self-similarity have been explored to support more nontrivial modes. Here, we demonstrate the first experimental realization of fractal photonic anomalous Floquet topological insulators based on dual Sierpinski carpet consisting of directional couplers using the femtosecond laser direct writing. The fabricated lattices support much more kinds of chiral edge states with fewer waveguides and enable perfect hopping of quantum states with near unit transfer efficiency. Instead of zero-dimensional bound modes for quantum state transport in previous laser direct-written topological insulators, we generate multiple propagating single-photon chiral edge states in the fractal lattice and observe high-visibility quantum interferences. These suggest the successful realization of highly indistinguishable single-photon chiral edge states, which can be applied in various quantum operations. This work provides the potential for enhancing the multi-fold manipulation of quantum states, enlarging the encodable quantum information capacity in a single lattice via high-dimensional encoding and many other fractal applications.

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Higher-order topological biphoton corner states in two-dimensional photonic lattices

Cited by 13 publications

References 58 publications

Topological Photonic States in Waveguide Arrays

Topological Photonic States in Waveguide Arrays

Ultrafast Coherent Energy Transport of Fenna–Matthews–Olson Complex in a 3D Photonic Lattice

Fractal photonic anomalous Floquet topological insulators to generate multiple quantum chiral edge states

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