DataVXAdvanced Optical MaterialsPaper
journal article·2021-11

Optically Driven Giant Superbunching from a Single Perovskite Quantum Dot

Ziyu Wang, Abdullah Rasmita, Guankui Long, Disheng Chen, Chusheng Zhang, Oscar Garcia Garcia, Hongbing Cai, Qihua Xiong, Wei‐bo Gao

Advanced Optical Materials· Volume 9· Issue 21
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Source abstract

Abstract

Abstract Photon superbunching is a signature of a strong correlation between photons, which is a crucial resource needed in quantum communication and computation. As such, a superbunched photon source based on a material with high quantum efficiency, like cesium lead halide perovskite, is highly desirable. Utilizing the large dark–bright exciton splitting in CsPbBr3 quantum dot (QD), the authors achieve a superbunching with a large g(2)(0) ≈ 30 from an optically driven single CsPbBr3 QD emission at cryogenic temperature. The cascaded emission is identified as the cause of this superbunching by utilizing second‐order cross‐correlation measurement and exploring the excitation power and temperature dependence of the bunching level. The findings have immediate implications on the basic understanding of a single perovskite QD emission and its application as a quantum light source.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Semiconductor Quantum Structures and Devices · Quantum optics and atomic interactions

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

Affiliations

Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore

School of Materials Science and Engineering National Institute for Advanced Materials Nankai University Tianjin 300350 P. R. China

State Key Laboratory of Low‐Dimensional Quantum Physics and Department of Physics Tsinghua University Beijing 100084 P. R. China

Beijing Academy of Quantum Information Sciences Beijing 100193 P. R. China

The Photonics Institute and Centre for Disruptive Photonic Technologies Nanyang Technological University Singapore 637371 Singapore

Funding

Ministry of Education - Singapore · National Research Foundation Singapore

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