1106.3513 (Khabat Heshami et al.)

Controllable-dipole quantum memory    [PDF]

Khabat Heshami, Adam Green, Yang Han, Arnaud Rispe, Erhan Saglamyurek, Neil Sinclair, Wolfgang Tittel, Christoph Simon

We present a quantum memory protocol for photons that is based on the direct control of the transition dipole moment. We focus on the case where the light-matter interaction is enhanced by a cavity. We show that the optimal write process (maximizing the storage efficiency) is related to the optimal read process by a reversal of the {\it effective time} $\tau=\int dt g^2(t)/\kappa$, where $g(t)$ is the time-dependent coupling and $\kappa$ is the cavity decay rate. We discuss the implementation of the protocol in a rare-earth ion doped crystal, where an optical transition can be turned on and off by switching a magnetic field.

View original: http://arxiv.org/abs/1106.3513