Highly efficient entanglement swapping and teleportation at telecom wavelength

Scientific Reports
Rui-Bo JinM Sasaki

Abstract

Entanglement swapping at telecom wavelengths is at the heart of quantum networking in optical fiber infrastructures. Although entanglement swapping has been demonstrated experimentally so far using various types of entangled photon sources both in near-infrared and telecom wavelength regions, the rate of swapping operation has been too low to be applied to practical quantum protocols, due to limited efficiency of entangled photon sources and photon detectors. Here we demonstrate drastic improvement of the efficiency at telecom wavelength by using two ultra-bright entangled photon sources and four highly efficient superconducting nanowire single photon detectors. We have attained a four-fold coincidence count rate of 108 counts per second, which is three orders higher than the previous experiments at telecom wavelengths. A raw (net) visibility in a Hong-Ou-Mandel interference between the two independent entangled sources was 73.3 ± 1.0% (85.1 ± 0.8%). We performed the teleportation and entanglement swapping, and obtained a fidelity of 76.3% in the swapping test. Our results on the coincidence count rates are comparable with the ones ever recorded in teleportation/swapping and multi-photon entanglement generation experiments at a...Continue Reading

References

Nov 2, 1987·Physical Review Letters·C K HongL Mandel
Aug 5, 1991·Physical Review Letters·A K Ekert
Aug 19, 1996·Physical Review Letters·A Peres
Jan 22, 2002·Physical Review Letters·Thomas JenneweinAnton Zeilinger
Aug 7, 2007·Physical Review Letters·Antonio AcínValerio Scarani
Jun 20, 2008·Nature·H J Kimble
Jun 25, 2009·Optics Express·Hiroki Takesue, Benjamin Miquel
Jul 1, 2010·Optics Express·Yinghong XueHidemi Tsuchida
Jan 15, 2011·Physical Review Letters·Andreas EcksteinChristine Silberhorn
Mar 4, 2011·Optics Express·Artur SchererWolfgang Tittel
Nov 24, 2011·Nature Communications·Yun-Feng HuangGuang-Can Guo
Sep 7, 2012·Nature·Xiao-Song MaAnton Zeilinger
May 15, 2013·Optics Express·Rui-Bo JinMasahide Sasaki
Nov 19, 2015·Proceedings of the National Academy of Sciences of the United States of America·Thomas HerbstAnton Zeilinger

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Citations

Nov 15, 2016·Scientific Reports·Rui-Bo JinMasahide Sasaki
Nov 14, 2018·Reports on Progress in Physics·Fulvio FlaminiFabio Sciarrino
Jan 13, 2018·Science Advances·Morgan M WestonGeoff J Pryde
Jul 15, 2016·Optics Express·Morgan M WestonGeoff J Pryde
Nov 13, 2015·Optics Express·Rui-Bo JinMasahide Sasaki
Nov 9, 2019·Physical Review Letters·Michael ZopfOliver G Schmidt
Jul 11, 2021·The Review of Scientific Instruments·Ali AnwarAlexander Ling
Mar 1, 2018··Philippe GrangierA. I. Lvovsky
May 21, 2018··Sebastien TanzilliLaurent Labonté

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