Author Affiliations
Abstract
1 State Key Laboratory on Integrated Opto-Electronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
2 Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China
The continuous-time quantum walk (CTQW) is the quantum analogue of the continuous-time classical walk and is widely used in universal quantum computations. Here, taking the advantages of the waveguide arrays, we implement large-scale CTQWs on chips. We couple the single-photon source into the middle port of the waveguide arrays and measure the emergent photon number distributions by utilizing the fiber coupling platform. Subsequently, we simulate the photon number distributions of the waveguide arrays by considering the boundary conditions. The boundary conditions are quite necessary in solving the problems of quantum mazes.
270.5570 Quantum detectors 270.0270 Quantum optics Chinese Optics Letters
2019, 17(5): 052701
吉林大学电子科学与工程学院集成光电子学国家重点联合实验室, 吉林 长春 130012
光控相控阵(OPA)不需要机械转动即可实现光束在空间内的扫描,在激光测距以及自由空间光通信等领域具有广阔的应用前景。硅基光电子集成技术可在芯片上实现光电子器件的大规模集成,并与互补金属氧化物半导体(CMOS)集成电路工艺技术完全兼容,以其制作的光控相控阵具有扫描速度快、体积小、成本低、功耗低等特点。目前报道的利用硅基光电子集成技术制作的相控阵,最大的横向扫描范围为80°,最大的纵向扫描范围为36°。简述了硅基光电子集成相控阵的扫描原理,并对国内外最新的研究成果进行了分析总结,最后指出此种技术实用化过程中亟待解决的关键问题,并提出了一些可以提升性能的方案。
光电子学 光控相控阵 集成光电子器件 光束扫描 激光雷达 激光与光电子学进展
2018, 55(5): 050001
