Scheme for generating a sequence of single photons of alternating polarization
Single-photons of well-defined polarization that are deterministically generated in a single spatio-temporal field mode are the key to the creation of multi-partite entangled states in photonic networks. Here, we present a novel scheme to produce such photons from a single atom in an optical cavity, by means of vacuum-stimulated Raman transitions between the Zeeman substates of a single hyperfine state. Upon each transition, a photon is emitted into the cavity, with a polarization that depends on the direction of the Raman process.
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Document Type: Research Article
Affiliations: 1: Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany 2: Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, UK
Publication date: July 1, 2007