Free Space Interference Experiments with Single Photons and Single Ions

  • Lukáš Slodička
  • Gabriel Hétet
  • Markus Hennrich
  • Rainer Blatt
Chapter

Abstract

Trapped ion crystals have proved to be one of the most viable physical implementations of quantum registers and a promising candidate for a scalable realization of quantum networks. The latter will require the development of an efficient interface between trapped ions and photons. We describe two research directions that are currently investigated to realize such photonic quantum interfaces in free space using high numerical aperture optics. The first approach investigates how strong focusing of light onto a single ion can increase the interaction strength to achieve efficient interaction between a photon and the ion. The second approach uses a probabilistic measurement on scattered photons to generate entanglement between two ions that could be used to distribute information in a quantum network. For both approaches a higher numerical aperture would increase the efficiency of the interface.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Lukáš Slodička
    • 1
  • Gabriel Hétet
    • 2
  • Markus Hennrich
    • 3
    • 4
  • Rainer Blatt
    • 3
    • 5
  1. 1.Department of OpticsPalacký UniversityOlomoucCzech Republic
  2. 2.Laboratoire Pierre Aigrain, Ecole Normale Supérieure-PSL Research UniversityCNRS, Université Pierre et Marie Curie-Sorbonne Universités, Université Paris Diderot-Sorbonne Paris CitéParis Cedex 05France
  3. 3.University of InnsbruckInnsbruckAustria
  4. 4.Department of PhysicsStockholm UniversityStockholmSweden
  5. 5.Institute for Quantum Optics and Quantum InformationAustrian Academy of SciencesInnsbruckAustria

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