Nonlinearities could be strengthened by photonic crystals

Typically, photons can pass by one another unchanged. However, a number of important scientific and technological applications can be enabled by using matter as a medium for photons to talk with one another. The problem? These interactions are generally weak.

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<p><a href="http://www.physorg.com/news103302464.html">Nonlinearities could be strengthened by photonic crystals</a></p> <p>Typically, photons can pass by one another unchanged. However, a number of important scientific and technological applications can be enabled by using matter as a medium for photons to talk with one another. The problem? These interactions are generally weak.</p>