Metasurface interferometry toward quantum sensors

Philip Georgi; Marcello Massaro; Kai-Hong Luo; Basudeb Sain; Nicola Montaut; Harald Herrmann; Thomas Weiss; Guixin Li; Christine Silberhorn; Thomas Zentgraf

doi:10.1038/s41377-019-0182-6

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Metasurface interferometry toward quantum sensors

Article

- Metasurface interferometry toward quantum sensors
- Light: Science & Applications Vol. 8, Issue 4, Pages: 620-626(2019)
- Affiliations：
  
  1.Paderborn University, Department of Physics, Warburger Str. 100, 33098 Paderborn, Germany
  2.University of Stuttgart, 4th Physics Institute, Pfaffenwaldring 57, 70569 Stuttgart, Germany
  3.Southern University of Science and Technology, Department of Materials Science and Engineering, Shenzhen Institute for Quantum Science and Engineering, 518055 Shenzhen, China
- Author bio：
  
  Thomas Zentgraf (thomas.zentgraf@uni-paderborn.de)
- Funds：
- DOI：10.1038/s41377-019-0182-6
  CLC：
- Published：2019，
  
  Published Online：14 August 2019，
  
  Received：22 March 2019，
  
  Revised：08 July 2019，
  
  Accepted：21 July 2019
- Accepted：
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Georgi, P. et al. Metasurface interferometry toward quantum sensors. Light: Science & Applications, 8, 620-626 (2019).
DOI：

Georgi, P. et al. Metasurface interferometry toward quantum sensors. Light: Science & Applications, 8, 620-626 (2019). DOI： 10.1038/s41377-019-0182-6.

摘要

Abstract

Optical metasurfaces open new avenues for the precise wavefront control of light for integrated quantum technology. Here

we demonstrate a hybrid integrated quantum photonic system that is capable of entangling and disentangling two-photon spin states at a dielectric metasurface. Via the interference of single-photon pairs at a nanostructured dielectric metasurface

a path-entangled two-photon NOON state with circular polarization that exhibits a quantum HOM interference visibility of 86 ± 4% is generated. Furthermore

we demonstrate nonclassicality andphase sensitivity in a metasurface-based interferometer with a fringe visibility of 86.8 ± 1.1% in the coincidence counts. This high visibility proves the metasurface-induced path entanglement inside the interferometer. Our findings provide a promising way to develop hybrid-integrated quantum technology operating in the high-dimensional mode space in various applications

such as imaging

sensing

and computing.

关键词

Keywords

references

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