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Distribution of time-energy entanglement over 100 km fiber using superconducting single-photon detectors

Published

Author(s)

Qiang Zhang, Hiroki Takesue, Sae Woo Nam, Carston Langrock, Xiuping Xie, Burm Baek, Martin M. Fejer, Yoshihisa Yamamoto

Abstract

In this letter, we report an experimental realization of distributing entangled photon pairs over 100 km of dispersion-shifted fiber. In the experiment, we used a periodically poled lithium niobate waveguide to generate the time-energy entanglement and superconducting single-photon detectors to detect the photon pairs after 100 km. We also demonstrate that the distributed photon pairs can still be useful for quantum key distribution and other quantum communication tasks.
Citation
Optics Express
Volume
16
Issue
8

Keywords

entanglement, time-bin, superconducting detectors, sspd, lithium niobate

Citation

Zhang, Q. , Takesue, H. , Nam, S. , Langrock, C. , Xie, X. , Baek, B. , Fejer, M. and Yamamoto, Y. (2008), Distribution of time-energy entanglement over 100 km fiber using superconducting single-photon detectors, Optics Express, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=33014 (Accessed April 20, 2024)
Created April 13, 2008, Updated October 12, 2021