Electrically Driven Single-Photon Superradiance from Molecular Chains in a Plasmonic Nanocavity

Yang Luo, Gong Chen, Yang Zhang, Li Zhang, Yunjie Yu, Fanfang Kong, Xiaojun Tian, Yao Zhang, Chongxin Shan, Yi Luo, Jinlong Yang, Vahid Sandoghdar, Zhenchao Dong, and J. G. Hou
Phys. Rev. Lett. 122, 233901 – Published 12 June 2019
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Abstract

We demonstrate single-photon superradiance from artificially constructed nonbonded zinc-phthalocyanine molecular chains of up to 12 molecules. We excite the system via electron tunneling in a plasmonic nanocavity and quantitatively investigate the interaction of the localized plasmon with single-exciton superradiant states resulting from dipole-dipole coupling. Dumbbell-like patterns obtained by subnanometer resolved spectroscopic imaging disclose the coherent nature of the coupling associated with superradiant states while second-order photon correlation measurements demonstrate single-photon emission. The combination of spatially resolved spectral measurements with theoretical considerations reveals that nanocavity plasmons dramatically modify the linewidth and intensity of emission from the molecular chains, but they do not dictate the intrinsic coherence of the superradiant states. Our studies shed light on the optical properties of molecular collective states and their interaction with nanoscopically localized plasmons.

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  • Received 4 January 2019

DOI:https://doi.org/10.1103/PhysRevLett.122.233901

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Yang Luo1,*, Gong Chen1,2,*, Yang Zhang1,†, Li Zhang1, Yunjie Yu1, Fanfang Kong1, Xiaojun Tian1, Yao Zhang1, Chongxin Shan2, Yi Luo1, Jinlong Yang1, Vahid Sandoghdar3, Zhenchao Dong1,‡, and J. G. Hou1,§

  • 1Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 2School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China
  • 3Max Planck Institute for the Science of Light, Erlangen 91058, Germany

  • *These authors contributed equally to this work.
  • Corresponding author. zhyangnano@ustc.edu.cn
  • Corresponding author. zcdong@ustc.edu.cn
  • §Corresponding author. jghou@ustc.edu.cn

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Issue

Vol. 122, Iss. 23 — 14 June 2019

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