journal article·2019-11-26Open access

Nanowire Quantum Dot Surface Engineering for High Temperature Single Photon Emission

Peng Yu, Ziyuan Li, Tongwei Wu, Yi-Tao Wang, Xin Tong, Chuan-Feng Li, Zhongchang Wang, Su-Huai Wei, Yunyan Zhang, Huiyun Liu, Lan Fu, Yanning Zhang, Jiang Wu, Hark Hoe Tan, Chennupati Jagadish, Zhiming M. Wang

ACS Nano· Volume 13· Issue 11

Abstract

Generating single photons at high temperature remains a major challenge, particularly for group III-As and III-P materials widely used in optical communication. Here, we report a high temperature single photon emitter based on a "surface-free" GaAs quantum dot (QD) in a GaAsP nanowire. By using self-catalyzed vapor-liquid-solid growth and simple surface engineering, we can significantly enhance the optical signal from the QDs with a highly polarized photoluminescence at 750 nm. The "surface-free" nanowire quantum dots show photon antibunching up to 160 K and well resolved exciton lines as high as 220 K.
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Research context

OpenAlex topics: Nanowire Synthesis and Applications · Diamond and Carbon-based Materials Research · Semiconductor Quantum Structures and Devices

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China

Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 2601, Australia

Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei 230026, China

Department of Quantum and Energy Materials, International Iberian Nanotechnology Laboratory (INL), Braga 4715-330, Portugal

Beijing Computational Science Research Center, Beijing 100094, China

Department of Electronic and Electrical Engineering, University College London, London WC1E 7JE, United Kingdom

Funding

Engineering and Physical Sciences Research Council · Australian Research Council · National Natural Science Foundation of China · UESTC Shared Research Facilities of Electromagnetic Wave and Matter Interaction

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