InGaP <italic style="font-style: italic">χ</italic><sup>(2)</sup> integrated photonics platform for broadband, ultra-efficient nonlinear conversion and entangled photon generation

Joshua Akin; Yunlei Zhao; Yuvraj Misra; A. K. M. Naziul Haque; Kejie Fang

doi:10.1038/s41377-024-01653-5

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InGaP χ⁽²⁾ integrated photonics platform for broadband, ultra-efficient nonlinear conversion and entangled photon generation

Original Articles

- InGaP χ⁽²⁾ integrated photonics platform for broadband, ultra-efficient nonlinear conversion and entangled photon generation
- Light: Science & Applications Vol. 13, Issue 12, Pages: 3090-3098(2024)
- Affiliations：
  
  1.Holonyak Micro and Nanotechnology Laboratory and Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
  2.Illinois Quantum Information Science and Technology Center, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Author bio：
  
  Kejie Fang (kfang3@illinois.edu)
- Funds：
- DOI：10.1038/s41377-024-01653-5
  CLC：
- Published：31 December 2024，
  
  Published Online：15 October 2024，
  
  Received：02 June 2024，
  
  Revised：17 September 2024，
  
  Accepted：24 September 2024
- Accepted：
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Akin, J. et al. InGaP χ⁽²⁾ integrated photonics platform for broadband, ultra-efficient nonlinear conversion and entangled photon generation. Light: Science & Applications, 13, 3090-3098 (2024).
DOI：

Akin, J. et al. InGaP χ⁽²⁾ integrated photonics platform for broadband, ultra-efficient nonlinear conversion and entangled photon generation. Light: Science & Applications, 13, 3090-3098 (2024). DOI： 10.1038/s41377-024-01653-5.

摘要

Abstract

Nonlinear optics plays an important role in many areas of science and technology. The advance of nonlinear optics is empowered by the discovery and utilization of materials with growing optical nonlinearity. Here we demonstrate an indium gallium phosphide (InGaP) integrated photonics platform for broadband

ultra-efficient second-order nonlinear optics. The InGaP nanophotonic waveguide enables second-harmonic generation with a normalized efficiency of 128

000%/W/cm

at 1.55

m pump wavelength

nearly two orders of magnitude higher than the state of the art in the telecommunication C band. Further

we realize an ultra-bright

broadband time-energy entangled photon source with a pair generation rate of 97 GHz/mW and a bandwidth of 115 nm centered at the telecommunication C band. The InGaP entangled photon source shows high coincidence-to-accidental counts ratio CAR

and two-photon interference visibility

98%. The InGaP second-order nonlinear photonics platform will have wide-ranging implications for non-classical light generation

optical signal processing

and quantum networking.

关键词

Keywords

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InGaP χ(2) integrated photonics platform for broadband, ultra-efficient nonlinear conversion and entangled photon generation

DOI：10.1038/s41377-024-01653-5

摘要

Abstract

关键词

Keywords

references

InGaP χ⁽²⁾ integrated photonics platform for broadband, ultra-efficient nonlinear conversion and entangled photon generation