Luo, X.-WHope, JosephHillman, BenjaminStace, T M2015-12-131050-2947http://hdl.handle.net/1885/73145We study the effects of diffusion on a Λ-gradient echo memory, which is a coherent optical quantum memory, using thermal gases. The efficiency of this memory is high for short storage time, but decreases exponentially due to decoherence as the storage tiAuthor/s retain copyrightKeywords: Coherent optical; Diffusion effects; Gradient echo; Memory systems; Numerical results; Quantum memory; Storage efficiency; Transverse diffusions; Mathematical models; Physics; Diffusion201310.1103/PhysRevA.87.0623282016-02-24