Heralded atomic-ensemble quantum memory for photon polarization states
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Author(s)
Tanji, Haruka
Simon, Jonathan
Ghosh, Saikat
Bloom, Benjamin
Vuletic, Vladan
Date Issued
July 2009
Journal
Physica Scripta
Publisher
Royal Swedish Academy of Sciences
Citation
Tanji, Haruka et al. “Heralded atomic-ensemble quantum memory for photon polarization states.” Physica Scripta T135 (2009): 014010.
Version
Author's final manuscript
Abstract
We describe the mapping of quantum states between single photons and an atomic ensemble. In particular, we demonstrate a heralded quantum memory based on the mapping of a photon polarization state onto a single collective-spin excitation (magnon) shared between two atomic ensembles. The polarization fidelity above 90(2)% for any input polarization far exceeds the classical limit of \frac{2}{3} . The process also constitutes a quantum non-destructive probe that detects and regenerates a photon without measuring its polarization.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT-Harvard Center for Ultracold Atoms
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1088/0031-8949/2009/T135/014010
