Utilizing broadband wavelength-division multiplexing capabilities of hollow-core fiber for quantum communications

Umberto Nasti, Hesham Sakr, Ian A. Davidson, Francesco Poletti, Ross J. Donaldson

Research output: Contribution to journalArticlepeer-review

5 Downloads (Pure)

Abstract

One of the major challenges in the deployment of quantum communications (QC) over solid-core silica optical fiber is the performance degradation due to the optical noise generated with co-propagating classical optical signals. To reduce the impact of the optical noise, research teams are turning to new and novel architectures of solid-core and hollow-core optical fiber. We studied the impact when co-propagating a single-photon level (850 nm) and two classical optical signals (940 nm and 1550 nm) while utilizing a nested antiresonant nodeless fiber (NANF) with two low-loss windows. The 940 nm signal was shown to impact the single-photon measurement due to the silicon detector technology implemented; however, multiplexing techniques and filtering could reduce the impact. The 1550 nm signal was shown to have no detrimental impact. The results highlight that both high bandwidth optical traffic at 1550 nm and a QC channel at 850 nm could co-propagate without degradation to the QC channel.
Original languageEnglish
Pages (from-to)8959-8966
Number of pages8
JournalApplied Optics
Volume61
Issue number30
Early online date14 Oct 2022
DOIs
Publication statusPublished - 20 Oct 2022

Keywords

  • quantum
  • Hollow core fibres
  • communication

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Utilizing broadband wavelength-division multiplexing capabilities of hollow-core fiber for quantum communications'. Together they form a unique fingerprint.

Cite this