Stefan Riedl, Matthias Lettner, Christoph Vo, Simon Baur, Gerhard Rempe, Stephan Dürr
A scheme based on electromagnetically induced transparency is used to store
light in a Bose-Einstein condensate. In this process, a photonic polarization
qubit is stored in atomic Zeeman states. The performance of the storage process
is characterized and optimized. The average process fidelity is 1.000 +/-
0.004. For long storage times, temporal fluctuations of the magnetic field
reduce this value, yielding a lifetime of the fidelity of 1.1 +/- 0.2 ms. The
write-read efficiency of the pulse energy can reach 0.53 +/- 0.05.
View original:
http://arxiv.org/abs/1112.4733
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