Desenvolvimento de uma memória atômica eficiente baseada no fenômeno da absorção eletromagneticamente induzida

Abstract

Information storage using atomic memories can be done through some coherent light phenomena, two of which are electromagnetically induced transparency (EIT), one of the most explored conditions, and electromagnetically induced absorption (EIA), which has a vast number of gaps about its applications. Therefore, a theoretical analytical model of an atomic memory was developed, going through the stage of writing, sto- rage and reading, using the EIT and EIA configurations so that comparisons of the energy of the extracted pulse, the temporal shape of the pulse, the memory storage time and the energy efficiency in pulse extraction could be made. It has been shown that, in the EIA condition, the energy and maximum intensity of the extracted pulse are much higher than in the EIT condition. Furthermore, it was observed that the energy and maximum intensity of the generated optical pulse have the same decay time, re- gardless of whether the condition used is EIT or EIA. The work proves that a greater efficiency is achieved in the extraction of energy in the saturated regime of an atomic memory based on the EIA than in one in the EIT condition.