Entanglement distribution over 300 km of fiber

Takahiro Inagaki; Nobuyuki Matsuda; Osamu Tadanaga; Masaki Asobe; Hiroki Takesue

doi:10.1364/OE.21.023241

Entanglement distribution over 300 km of fiber

Quantum Physics 2013-10-22 v1

Authors: Takahiro Inagaki , Nobuyuki Matsuda , Osamu Tadanaga , Masaki Asobe , Hiroki Takesue

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We report the distribution of time bin entangled photon pairs over 300 km of optical fiber. We realized this by using a high speed and high signal to noise ratio entanglement generation and evaluation setup that consists of periodically poled lithium niobate waveguides and superconducting single photon detectors. The observed two-photon interference fringes exhibited a visibility of 84 %. We confirmed the violation of Bell's inequality by 2.9 standard deviations.

Keywords

entanglement distribution time bin entangled photon pairs optical fiber periodically poled lithium niobate superconducting single photon detectors Bell's inequality two-photon interference

Cite

@article{arxiv.1310.5473,
  title  = {Entanglement distribution over 300 km of fiber},
  author = {Takahiro Inagaki and Nobuyuki Matsuda and Osamu Tadanaga and Masaki Asobe and Hiroki Takesue},
  journal= {arXiv preprint arXiv:1310.5473},
  year   = {2013}
}

Comments

8 pages, 4 figures

Entanglement distribution over 300 km of fiber

Abstract

Keywords

Cite

Comments

Related papers