Figure 6
(a) Comparison of optical memory efficiency for resonant (green symbols) and near-resonant with \(\Delta _c=-700\) MHz (violet symbols) EIT schemes as a function of Rb vapor temperature. Higher efficiency is obtained in the near-resonant case, with the maximum efficiency reached at the temperature higher than the temperature of the resonant maximum efficiency. The lines are guide to the eye. (b) Optical memory efficiency as a function of storage time in the resonant (green symbols) and near-resonant case (violet symbols) at \(\Delta _c=-700\) MHz, at Rb cell temperature of \(\sim\)45\(^{\circ }\)C. Inset depicts memory efficiency for \(\Delta _c=+180\) MHz (blue symbols) and +580 MHz (bordeaux symbols). Lines are fit of the exponential decay function.).
