Coherent Splitting of Single Photons by an Ideal Beam Splitter

  • J. D. Franson
Conference paper

Abstract

To a first approximation, a single photon incident upon an ideal beam splitter will either be transmitted or reflected. The author has recently shown, however, that an ideal beam splitter has a small probability of coherently splitting a single photon into a pair of secondary photons, conserving energy in the process. This process is analogous to parametric down-conversionl,2, except that the necessary nonlinearity does not come from any inherent nonlinearity of the medium but comes, instead, from the A 2 term in the Hamiltonian. The necessary inversion asymmetry is also not a property of the medium and is dependent upon the direction of the wave vectors of the incident and secondary photons. The secondary photons have little or no first-order coherence but they do possess second-order coherence, which allows their use in two-photon interferometry3.

Keywords

Single Photon Beam Splitter Incident Photon Fine Structure Constant Thin Metallic Film 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

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Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • J. D. Franson
    • 1
  1. 1.Applied Physics LaboratoryThe Johns Hopkins UniversityLaurelUSA

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