Guy Bensky, David Petrosyan, Johannes Majer, Jörg Schmiedmayer, Gershon Kurizki
We propose a general method to maximize the fidelity of writing, storage and reading of quantum information (QI) in a spectrally inhomogeneous spin ensemble used as quantum memory. The method is based on preselecting the optimal spectral portion of the ensemble by a judiciously designed pulse. It allows drastic improvement of quantum memory realized by spin ensembles that store QI from a resonator or an optical beam.
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http://arxiv.org/abs/1203.6305
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