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Integratable quantum walking device based on micro-nano waveguide coupling array and air slot coupling array

A technology of micro-nano waveguide and coupling array, which is applied in the coupling of optical waveguide, optical waveguide light guide, light guide, etc., can solve the problems of unfavorable photon integration and incompatible volume, and achieve the effect that is beneficial to photon integration and the relationship is simple and clear

Inactive Publication Date: 2014-07-30
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide an integrated quantum walking device based on micro-nano waveguides and air slot coupling arrays, so as to solve the incompatibility between existing integrated optical quantum devices and CMOS technology and the disadvantages of large volume. To solve the problem of photon integration, realize an integrable quantum walking device that is compatible with the current CMOS process and has a compact size that is conducive to photon integration

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  • Integratable quantum walking device based on micro-nano waveguide coupling array and air slot coupling array
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  • Integratable quantum walking device based on micro-nano waveguide coupling array and air slot coupling array

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Embodiment 1

[0037] Figure 2(a) shows the structure constructed along the x-direction for analyzing the coupling length, including two micro-nano waveguides and an air slot in between. The air slot is 80 nanometers wide, and the micro-nano waveguide is 400 nanometers wide. The dielectric material is silicon with a refractive index of 3.464. Light with a wavelength of 1.55 μm is input from the lower incident port. Figure 2(b) shows the steady-state field distribution after distribution, which are 0.79% and 93.7% at output ports 1 and 2, respectively. So the coupling length is 10.22 microns.

[0038] Figure 3(a) shows the coupled array of micro-nano waveguides and air slots arranged along the x-direction. Considering that the present invention involves a new quantum walk scheme based on the coupled array of micro-nano waveguides and air slots, only It is necessary to prove that the micro-nano waveguide and the air-slot coupling array can be used for quantum random walk, and the steady-state ...

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Abstract

The invention discloses an integratable quantum walking device based on a micro-nano waveguide coupling array and an air slot coupling array. The integratable quantum walking device is composed of the micro-nano waveguide coupling array and the air slot coupling array, wherein the micro-nano waveguide coupling array and the air slot coupling array are coupled, the micro-nano waveguide coupling array comprises multiple parallel strip-shaped micro-nano waveguides arranged at equal intervals, air slots between the strip-shaped micro-nano waveguides form the air slot coupling array, any one strip-shaped micro-nano waveguide, close to the middle position, in the micro-nano waveguide coupling array serves as the input waveguide, and the input port of the input waveguide is the input port of the integratable quantum walking device. Based on the advantages of the compact structures of the micro-nano waveguide coupling array and the air slot coupling array and the compatibility with the CMOS technology, random quantum walking of photons on a small-size integrated optical device is realized.

Description

technical field [0001] The invention relates to the field of semiconductor integrated optical technology and quantum information science technology, in particular to an integrated quantum walking device based on a micro-nano waveguide and an air slot coupling array. Background technique [0002] Quantum information science is an emerging discipline that uses quantum mechanical effects to process and transmit information. Quantum computing is the core of quantum information processing, and constructing perfect quantum algorithms has become the key to realizing large-scale quantum computing and quantum computers, and has received extensive attention in recent years. Since people began to study quantum walks in the 1990s, quantum walks have been used to build entirely new quantum algorithms and to use the theory of quantum walks to simulate the evolution of quantum systems. [0003] The current experimental research on quantum information is based on a variety of physical carr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/12G02B6/24G02B6/136
Inventor 郑婉华张瑞冯志刚王宇飞祁帆张斯日古楞
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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