The difference between the solid and dashed curves clearly shows that in this experiment we are able to observe and store information about the quantum state of light in the atomic spin state. Had we instead measured S{sub}Z of the probe, we would have been able to store the S{sub}y information in the atoms. From the width of the atomic noise peak we deduce the possible storage time in excess of 1 millisecond. Using two entangled atomic samples and two entangled modes of light the full quantum memory for both S{sub}Z and S{sub}y can be achieved in the future with this approach.
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