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

Putting certainty in the bank

A new way to manipulate quantum states resolves a long-standing conundrum about who knows what, and when and how, in the quantum world. The result is, as one has come to expect, startling and counterintuitive.

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

Access options

Buy this article

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


  1. Shannon, C. E. Bell Syst. Tech. J. 27, 379–423, 623–656 (1948).

    Article  Google Scholar 

  2. Horodecki, M., Oppenheim, J. & Winter, A. Nature 436, 673–676 (2005).

    Article  ADS  CAS  Google Scholar 

  3. Slepian, D. & Wolf, J. K. IEEE Trans. Inform. Theory 19, 461–480 (1971).

    Google Scholar 

  4. Bell, J. S. Physics 1, 195–200 (1964); reprinted in Bell, J. S. Speakable and Unspeakable in Quantum Mechanics (Cambridge Univ. Press, 1987).

    Google Scholar 

  5. Aczel, A. D. Entanglement: The Greatest Mystery in Physics (Wiley, London, 2002).

    Google Scholar 

  6. Bennett, C. H. et al. Phys. Rev. Lett. 70, 1895–1899 (1993).

    Article  ADS  MathSciNet  CAS  Google Scholar 

  7. Cerf, N. J. & Adami, C. Phys. Rev. Lett. 79, 5194–5197 (1997).

    Article  ADS  MathSciNet  CAS  Google Scholar 

  8. Yard, J., Devetak, I. & Hayden, P. preprint at (2005).

Download references

Author information

Authors and Affiliations


Rights and permissions

Reprints and permissions

About this article

Cite this article

Hayden, P. Putting certainty in the bank. Nature 436, 633–634 (2005).

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