Large Cross-Phase Modulation between Slow Co-propagating Weak Pulses in Rb

Wang, Zeng-Bin; Marzlin, Karl-Peter; Sanders, Barry C.

Large Cross-Phase Modulation between Slow Co-propagating Weak Pulses in Rb

Authors

Wang, Zeng-Bin

Marzlin, Karl-Peter

Sanders, Barry C.

Description

We propose a scheme to generate double electromagnetically induced transparency and optimal cross-phase modulation for two slow, copropagating pulses with matched group velocities in a single species of atom, namely 87 Rb. A single pump laser is employed and a homogeneous magnetic field is utilized to avoid cancellation effects through the nonlinear Zeeman effect. We suggest a feasible preparational procedure for the atomic initial state to achieve matched group velocities for both signal fields.
4 pages, 2 figures