The spatial plasmonic Bloch oscillations in nanoscale three-dimensional surface plasmon polaritons metal waveguide arrays

Lin, Weihua; Wang, Wenjin

doi:10.1364/oe.27.024591

Opt. Express

2019

DOI: 10.1364/oe.27.024591

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The spatial plasmonic Bloch oscillations in nanoscale three-dimensional surface plasmon polaritons metal waveguide arrays

Weihua Lin¹,

Wenjin Wang²

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Cited by 3 publications

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“…By contrast, surface plasmonic polaritons (SPPs), [10][11][12][13] which are a kind of surface electromagnetic waves confined at the interface between a metal and dielectric at infrared and visible frequency, provide an approach to design SPP waveguide arrays for realizing analogue quantum effects in nanoscales. 14) As another classical system, acoustic discrete waveguide arrays have also been designed to observe the analogue quantum behaviors of sound as light in discrete dielectric waveguide arrays. For example, Anderson localization is demonstrated with the random coupling between adjacent waveguides in acoustic waveguide arrays.…”

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confidence: 99%

Spatial Bloch oscillations in acoustic waveguide arrays

Liu

et al. 2021

Appl. Phys. Express

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We designed a type of acoustic waveguide supported by spoof acoustic surface waves. The effective refractive index of acoustic waveguide can be effectively tuned by tailoring the waveguide width to control the propagation of spoof acoustic surface waves. Based on the advantage of the tunable refractive index, we construct a discrete waveguide array with transverse refractive index gradients to simulate the time evolution of the probability waves of electron in a tight-binding lattice under an external electric field. Based on numerical simulations and experiments, we discuss the relationship between the spatial Bloch oscillations period and the transverse refractive index gradient. Furthermore, we also investigate the influence of the interval between waveguides on the amplitude of the Bloch oscillations. Our acoustic waveguide array maybe provides a versatile testbed to explore analogous quantum mechanical effects, such as Zener tunneling, Anderson localization, and massless Dirac dynamics in acoustic system.

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confidence: 99%

Spatial Bloch oscillations in acoustic waveguide arrays

Liu

et al. 2021

Appl. Phys. Express

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Array periodical nanofocusing effect in nanoscale three-dimensional surface plasmon polariton waveguide arrays

2020

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In this paper, the array periodical nanofocusing effect in a kind of nanoscale three-dimensional surface plasmon polariton (SPP) waveguide array is introduced. The refractive index of the dielectric layer in the three-dimensional SPP waveguide arrays has a parabolic distribution. The SPPs in the waveguide arrays show a periodical focusing effect as light illuminates on all waveguides. The oscillation propagating effect, which is similar to the photonic spatial Bloch oscillations in waveguide arrays but is fundamentally different from the Bloch oscillation effect in physics, is also realized as light illuminates on part of the waveguides of the arrays. The theoretical work is carried out by the coupled wave theory and is well demonstrated by the finite-difference time-domain numerical simulations.

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Continuous quantum walk in a 1-dimensional plasmonic lattice structure based on metal strip waveguides

Namekata

Hagihara

et al. 2021

Opt. Express

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We experimentally studied a continuous time evolution of a “plasmonic” walker in a 1-dimensional lattice structure based on long-range surface plasmon polariton waveguides. The plasmonic walker exhibited a typical time evolution of a 1-dimensional quantum walk, which indicates that the plasmonic system is a potential platform to construct quantum walk simulators. By comparing experimental results to numerical simulations, the fidelity of the plasmonic quantum walk simulator is estimated to be > 0.96, which demonstrates that the plasmonic system can be a feasible platform for large-scale and high dimensional quantum walk simulators.

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The spatial plasmonic Bloch oscillations in nanoscale three-dimensional surface plasmon polaritons metal waveguide arrays

Cited by 3 publications

References 44 publications

Spatial Bloch oscillations in acoustic waveguide arrays

Spatial Bloch oscillations in acoustic waveguide arrays

Array periodical nanofocusing effect in nanoscale three-dimensional surface plasmon polariton waveguide arrays

Continuous quantum walk in a 1-dimensional plasmonic lattice structure based on metal strip waveguides

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