Designing noise-robust quantum networks coexisting in the classical fiber infrastructure

Jordan M. Thomas, Gregory S. Kanter, Prem Kumar

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The scalability of quantum networking will benefit from quantum and classical communications coexisting in shared fibers, the main challenge being spontaneous Raman scattering noise. We investigate the coexistence of multi-channel O-band quantum and C-band classical communications. We characterize multiple narrowband entangled photon pair channels across 1282 nm-1318 nm co-propagating over 48 km of installed standard fiber with record C-band power (>18 dBm) and demonstrate that some quantum-classical wavelength combinations significantly outperform others. We analyze the Raman noise spectrum, optimal wavelength engineering, multi-photon pair emission in entangled photon-classical coexistence, and evaluate the implications for future quantum applications.

Original languageEnglish (US)
Pages (from-to)43035-43047
Number of pages13
JournalOptics Express
Volume31
Issue number26
DOIs
StatePublished - Dec 18 2023

Funding

U.S. Department of Energy (664603//DE-AC02-07CH11359).

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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