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Atomic quantum memory for photon polarization

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dc.contributor.advisor Vladan Vuletić. en_US Bloom, Benjamin Jacob, S.B. Massachusetts Institute of Technology en_US
dc.contributor.other Massachusetts Institute of Technology. Dept. of Physics. en_US 2009-01-26T22:02:43Z 2009-01-26T22:02:43Z 2008 en_US 2008 en_US
dc.description Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2008. en_US
dc.description This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. en_US
dc.description Includes bibliographical references (leaves 79-82). en_US
dc.description.abstract Using an ensemble of ultracold Cesium atoms in an optical cavity we demonstrate the efficient storage and retrieval of quantum information in the form of single photons. We use a photon that has scattered into the cavity mode to herald a successful creation of a collective excitation of Cesium atoms and hence our ability to retrieve a photon from the stored excitation at a later time. Post-selecting out only data that was preceded by a heralding photon we have achieved single-photon recovery efficiencies as high as 84%. We construct an atomic quantum memory for arbitrary optical polarization states using this technique on two spatially overlapped atomic samples. The two samples constitute a quantum memory making use of a bijective mapping between a photon polarization and a shared collective excitation in the atoms. The stored state is later retrieved as a single-photon polarization state. This memory showed an average fidelity of 0.93(5) for the recovered fiducial states as well as a conditional autocorrelation function g2 = 0.24(6), indicating the single-photon nature of the retrieved photons. In this thesis, a general discussion of the techniques employed and their background theory will be given, followed by a more detailed explanation of this most recent experiment. en_US
dc.description.statementofresponsibility by Benjamin Jacob Bloom. en_US
dc.format.extent 82 leaves en_US
dc.language.iso eng en_US
dc.publisher Massachusetts Institute of Technology en_US
dc.rights M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. en_US
dc.rights.uri en_US
dc.subject Physics. en_US
dc.title Atomic quantum memory for photon polarization en_US
dc.type Thesis en_US S.B. en_US
dc.contributor.department Massachusetts Institute of Technology. Dept. of Physics. en_US
dc.identifier.oclc 297175762 en_US

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