All-optical modulation of quantum states by nonlinear metasurface

Di Zhang; Yang Chen; Shengchao Gong; Wei Wu; Wei Cai; Mengxin Ren; Xifeng Ren; Shuang Zhang; Guangcan Guo; Jingjun Xu

doi:10.1038/s41377-022-00744-5

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All-optical modulation of quantum states by nonlinear metasurface

Articles

- All-optical modulation of quantum states by nonlinear metasurface
- Light: Science & Applications Vol. 11, Issue 3, Pages: 425-430(2022)
- Affiliations：
  
  1.The Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, School of Physics and TEDA Applied Physics Institute, Nankai University, Tianjin, China
  2.Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei, China
  3.Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, China
  4.Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
  5.Department of Physics, The University of Hong Kong, Hong Kong, China
- Author bio：
  
  Mengxin Ren (ren_mengxin@nankai.edu.cn)
  Xifeng Ren (renxf@ustc.edu.cn)
  Jingjun Xu (jjxu@nankai.edu.cn)
- Funds：
- DOI：10.1038/s41377-022-00744-5
  CLC：
- Published：31 March 2022，
  
  Published Online：11 March 2022，
  
  Received：14 October 2021，
  
  Revised：17 February 2022，
  
  Accepted：20 February 2022
- Accepted：
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Zhang, D. et al. All-optical modulation of quantum states by nonlinear metasurface. Light: Science & Applications, 11, 425-430 (2022).
DOI：

Zhang, D. et al. All-optical modulation of quantum states by nonlinear metasurface. Light: Science & Applications, 11, 425-430 (2022). DOI： 10.1038/s41377-022-00744-5.

摘要

Abstract

Metasurfaces have proven themselves an exotic ability to harness light at nano-scale

being important not only for classical but also for quantum optics. Dynamic manipulation of the quantum states is at the heart of quantum information processing; however

such function has been rarely realized with metasurfaces so far. Here

we report an all-optical dynamic modulation of the photonic quantum states using the nonlinear metasurface. The metasurface consists of a metallic nanostructure combined with a photoisomerizable azo layer. By tuning the plasmonic resonance through optically switching the azo molecules between their binary isomeric states

we have realized dynamic control of transmission efficiencies of orthogonally polarized photons and also the phase delay between them

thereby an entangled state was efficiently controlled. As an illustration

a quantum state distillation has been demonstrated to recover a Bell state from a non-maximally entangled one to that with fidelities higher than 98%. Our work would enrich the functions of the metasurface in the quantum world

from static to dynamic modulation

making the quantum metasurface going practical.

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Keywords

references

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