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Research at St Andrews

Quantum beat between sunlight and single photons

Research output: Contribution to journalArticle

Open Access Status

  • Embargoed (until 16/12/20)

Author(s)

Zhao-Chen Duan, Yu-Hao Deng, Ying Yu, Si Chen, Jian Qin, Hui Wang, Xing Ding, Li-Chao Peng, Christian Schneider, Da-Wei Wang, Sven Höfling, Jonathan P. Dowling, Chao-Yang Lu, Jian-Wei Pan

School/Research organisations

Abstract

We demonstrate fourth-order quantum beat between sunlight and single photons from a quantum dot. With a fast time-resolved detection system, we observed high-visibility quantum beat between the independent photons of different frequencies from the two astronomically separated light sources. The temporal dynamics of the beat oscillation indicate the coherent behavior of the interfering photons, and the raw visibility of two-photon interference shows violation of the classical limit with a frequency mismatch of three-times the line width.
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Details

Original languageEnglish
JournalNano Letters
VolumeArticles ASAP
Early online date16 Dec 2019
DOIs
Publication statusE-pub ahead of print - 16 Dec 2019

    Research areas

  • Quantum dots, Quantum information processing, Single photons, Fourth-order interference, Quanum beat

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