Access

News and Views

Nature 438, 749-750 (8 December 2005) | doi:10.1038/438749a; Published online 7 December 2005

Open Innovation Challenges

  • Single-cell Analysis Platform

    • Deadline: Dec 02 2009
    • Reward: $5,000 USD

    This Challenge is looking for novel approaches to analyzing changes at a single-cell level. This is...

  • Methods to Analyze Consumer Emotions

    • Deadline: Jan 17 2010
    • Reward: $10,000 USD

    The Seeker is looking for methods to analyze consumer emotions. This Challenge requires only a writ...

naturejobs

More science jobs
Post a job for free

Quantum information: Remember that photon

Philippe Grangier1

Top

Storing single photons in atomic memories, and releasing them at a later time, is a required step on the way to quantum repeaters and long-distance quantum cryptography networks. This step has now been taken.

The basic unit of quantum information, the quantum bit or qubit, can be encoded in various physical quantities, such as the polarization states of photons, or the spin states of atomic nuclei. To make qubits practically useful, random coupling of them with the external world — an effect known as decoherence — must at all costs be avoided or corrected.

  1. Philippe Grangier is at the Laboratoire Charles Fabry de l'Institut d'Optique, 91403 Orsay Cedex, France.
    Email: philippe.grangier@iota.u-psud.fr

MORE ARTICLES LIKE THIS

These links to content published by NPG are automatically generated.

NEWS AND VIEWS

Atomic physics Quantum leap from light to atoms

Nature News and Views (05 Oct 2006)

Quantum physics Tangled memories

Nature News and Views (06 Mar 2008)

See all 11 matches for News And Views

RESEARCH

Weissenberg Effect as an End-point in Coagulation Studies

Nature Letters to Editor (14 Oct 1967)

Conditional control of the quantum states of remote atomic memories for quantum networking

Nature Physics Article (01 Dec 2006)

See all 23 matches for Research