Large efficiency at telecom wavelength for optical quantum memories.
We implement the ROSE protocol in an erbium-doped solid, compatible with the telecom range. The ROSE scheme is an adaptation of the standard two-pulse photon echo to make it suitable for a quantum memory. We observe a retrieval efficiency of 40% for a weak laser pulse in the forward direction by using specific orientations of the light polarizations, magnetic field, and crystal axes.
Julián
J
Dajczgewand
Jean-Louis
JL
Le Gouët
Anne
A
Louchet-Chauvet
Thierry
T
Chanelière