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.

  • News & Views
  • Published:

Quantum information

An integrated light circuit

There's a long wish list for a workable quantum computer: a viable system must be fast, compact and stable. The first integrated optical quantum logic circuits are a step in the right direction.

This is a preview of subscription content, access via your institution

Relevant articles

Open Access articles citing this article.

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Figure 1: Light circuits.


  1. Politi, A., Cryan, M. J., Rarity, J. G., Yu, S. & O'Brien, J. L. Science 320, 646–649 (2008).

    Article  ADS  CAS  Google Scholar 

  2. Nielsen, M. A. & Chuang, I. L. Quantum Computation and Quantum Information (Cambridge Univ. Press, 2000).

    MATH  Google Scholar 

  3. O'Brien, J. L. Science 318, 1567–1570 (2007).

    Article  ADS  CAS  Google Scholar 

  4. Langford, N. K. et al. Phys. Rev. Lett. 95, 210504 (2005).

    Article  ADS  CAS  Google Scholar 

  5. Kiesel, N. et al. Phys. Rev. Lett. 95, 210505 (2005).

    Article  ADS  Google Scholar 

  6. Okamoto, R. et al. Phys. Rev. Lett. 95, 210506 (2005).

    Article  ADS  Google Scholar 

  7. Lu, C.-Y. et al. Nature Phys. 3, 91–95 (2007).

    Article  ADS  CAS  Google Scholar 

  8. Varnava, M., Browne, D. E. & Rudolph, T. Phys. Rev. Lett. 100, 060502 (2008).

    Article  ADS  Google Scholar 

  9. Dawson, C. M., Haselgrove, H. L. & Nielsen, M. A. Phys. Rev. A 73, 052306 (2006).

    Article  ADS  Google Scholar 

  10. Kielpinski, D., Monroe, C. & Wineland, D. J. Nature 417, 709–711 (2002).

    Article  ADS  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations


Rights and permissions

Reprints and permissions

About this article

Cite this article

Kwiat, P. An integrated light circuit. Nature 453, 294–295 (2008).

Download citation

  • Published:

  • Issue Date:

  • DOI:

This article is cited by


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