Nature Communications (Jul 2021)

Efficient experimental quantum fingerprinting with channel multiplexing and simultaneous detection

  • Xiaoqing Zhong,
  • Feihu Xu,
  • Hoi-Kwong Lo,
  • Li Qian

DOI
https://doi.org/10.1038/s41467-021-24745-x
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 12

Abstract

Read online

Quantum fingerprinting could allow an exponential quantum advantage in a cryptographic protocol, but current schemes are still difficult to scale. Here, the authors exploit wavelength division multiplexing to increase the channel capacity and reduce the communication time without the need for demultiplexing.