Slowing light in X(2) photonic crystals

The parametric nonlinear frequency down-conversion in χ(2)photonic crystals (PC) was studied. The study revealed that under suitable conditions the slowing down of probe field to approximately 11 m/s was achievable. The simultaneous availability of effects comprising of global phase-matching conditions, field localization, and gain experienced by the probe beam, brought the proposed light slowing. The yielding of tunneling velocities by these effects was also discussed.

A study of parametric nonlinear frequency down-conversion in photonic crystals reveals that under suitable conditions the probe field can be slowed down to approximately 11 m/s. The effect arises as a result of the simultaneous availability of global phase-matching conditions, field localization, and gain experienced by the probe beam. Together, these effects conspire to yield tunneling velocities previously reported only for coherently resonant interactions, i.e., electromagnetic induced transparency, in Bose-Einstein condensates, hot atomic gases, and doped crystals.