Four-Photon Quantum Interferometry at a Telecom Wavelength

Masahiro Yabuno; Ryosuke Shimizu; Yasuyoshi Mitsumori; Hideo Kosaka; Keiichi Edamatsu

doi:10.1103/PhysRevA.86.010302

Four-Photon Quantum Interferometry at a Telecom Wavelength

Quantum Physics 2013-05-30 v1

Authors: Masahiro Yabuno , Ryosuke Shimizu , Yasuyoshi Mitsumori , Hideo Kosaka , Keiichi Edamatsu

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Abstract

We report the experimental demonstration of four-photon quantum interference using telecom-wavelength photons. Realization of multi-photon quantum interference is essential to linear optics quantum information processing and measurement-based quantum computing. We have developed a source that efficiently emits photon pairs in a pure spectrotemporal mode at a telecom wavelength region, and have demonstrated the quantum interference exhibiting the reduced fringe intervals that correspond to the reduced de Broglie wavelength of up to the four photon `NOON' state. Our result should open a path to practical quantum information processing using telecom-wavelength photons.

Keywords

quantum photonics quantum optics

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@article{arxiv.1112.2019,
  title  = {Four-Photon Quantum Interferometry at a Telecom Wavelength},
  author = {Masahiro Yabuno and Ryosuke Shimizu and Yasuyoshi Mitsumori and Hideo Kosaka and Keiichi Edamatsu},
  journal= {arXiv preprint arXiv:1112.2019},
  year   = {2013}
}

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4 pages, 4 figures

Four-Photon Quantum Interferometry at a Telecom Wavelength

Abstract

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