This paper presents a simple quantum memory method for efficient storage and retrieve of light. The technique is based
on the principle of controlled reversible inhomogeneous broadening for which the information of the quantum state light
is imprinted in a two-level atoms ensemble and recalled by flipping the external nonuniform electric field. In present
work, the induced Stark shift varied linearly with position, and a numerical analysis for this protocol has been studied. It
shows that the storage efficiency can nearly reach 100% with a large enough optical depth, and the optimal broadening
for a given pulse width is also analyzed.
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