Hyperentangled photon sources in semiconductor waveguides

Dongpeng Kang, L. G. Helt, Sergei Zhukovsky, Juan P. Torres, J. E. Sipe, A. S. Helmy

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Abstract

We propose and analyze the performance of a technique to generate mode and polarization hyperentangled photons in monolithic semiconductor waveguides using two concurrent type-II spontaneous parametric down-conversion (SPDC) processes. These two SPDC processes are achieved by waveguide engineering which allows for simultaneous modal phase matching with the pump beam in a higher-order mode. Paired photons generated in each process are cross polarized and guided by different guiding mechanisms, which produces entanglement in both polarization and spatial mode. Theoretical analysis shows that the output quantum state has a high quality of hyperentanglement by spectral filtering with a bandwidth of a few nanometers, while off-chip compensation is not needed. This technique offers a path to realize an electrically pumped hyperentangled photon source.
Original languageEnglish
JournalPhysical Review A
Volume89
Issue number2
Pages (from-to)023833/1-8
ISSN2469-9926
DOIs
Publication statusPublished - 2014

Keywords

  • OPTICS
  • PHYSICS,
  • 2ND-HARMONIC GENERATION
  • POLARIZATION ENTANGLEMENT
  • PAIRS
  • STATE
  • CONVERSION
  • PROPOSAL
  • DEVICES
  • CHIP
  • Optical frequency conversion
  • Photons
  • Polarization
  • Quantum theory
  • Electrically pumped
  • Higher-order modes
  • Hyperentangled photons
  • Hyperentanglement
  • Modal phase matching
  • Semiconductor waveguide
  • Spectral filtering
  • Spontaneous parametric down-conversion
  • Elementary particle sources

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