Picosecond Synchronization System for the Distribution of Photon Pairs Through a Fiber Link Between Fermilab and Argonne National Laboratories

Keshav Kapoor, Si Xie, Joaquin Chung, Raju Valivarthi, Cristian Pena*, Lautaro Narvaez, Neil Sinclair, Jason P. Allmaras, Andrew D. Beyer, Samantha I. Davis, Gabriel Fabre, George Iskander, Gregory S. Kanter, Rajkumar Kettimuthu, Boris Korzh, Prem Kumar, Nikolai Lauk, Andrew Mueller, Matthew Shaw, Panagiotis SpentzourisMaria Spiropulu, Jordan M. Thomas, Emma E. Wollman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We demonstrate a three-node quantum network for C-band photon pairs using 2 pairs of 59 km of deployed fiber between Fermi and Argonne National Laboratories. The C-band pairs are directed to nodes using a standard telecommunication switch and the detection system is synchronized to picosecond-scale timing resolution using a coexisting O- or L-band optical clock distribution system. We measure a reduction of coincidence-to-accidental ratio (CAR) of the C-band pairs from 51 ± 2 to 5.3 ± 0.4 due to Raman scattering of the O-band clock pulses. Despite this reduction, the CAR is nevertheless suitable for quantum networks.

Original languageEnglish (US)
Article number9300107
JournalIEEE Journal of Quantum Electronics
Volume59
Issue number4
DOIs
StatePublished - Aug 1 2023

Keywords

  • C-band
  • L-band
  • O-band
  • Quantum network
  • Raman noise
  • clock distribution
  • fiber optics
  • photon pair
  • quantum communication
  • quantum-classical coexisting

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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