Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.


A controlled cascade interference

Nonlinear optical effects enable sophisticated functionalities to generate and manipulate light. The precise control of two distinct nonlinear phenomena in a photonic chip can enhance a key optical nonlinearity that makes single-photon sources more efficient.

This is a preview of subscription content

Access options

Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.

Fig. 1: Direct and indirect photon-pair generation.


  1. Cui, C., Zhang, L. & Fan, L. Nat. Phys. (2022).

  2. Bouwmeester, D. et al. Nature 390, 575–579 (1997).

    ADS  Google Scholar 

  3. Guo, X. et al. Light Sci. Appl. 6, e16249 (2017).

    Article  Google Scholar 

  4. Silverstone, J. et al. Nat. Photon. 8, 104–108 (2014).

    Article  ADS  Google Scholar 

  5. Chang, L., Liu, S. & Bowers, J. E. Nat. Photon. 16, 95–108 (2022).

    Article  ADS  Google Scholar 

  6. Schiek, R. J. Opt. Soc. Am. B 10, 1848–1855 (1993).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding authors

Correspondence to Thiago P. Mayer Alegre or Gustavo S. Wiederhecker.

Ethics declarations

Competing interests

The authors declare no competing interests.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Alegre, T.P.M., Wiederhecker, G.S. A controlled cascade interference. Nat. Phys. 18, 495–496 (2022).

Download citation

  • Published:

  • Issue Date:

  • DOI:


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing