Designing Noise-Robust Quantum Networks Coexisting in the Classical Fiber Infrastructure

Journal Article · Tue Apr 18 04:00:00 EDT 2023 · TBD

OSTI ID:1973626

Thomas, Jordan M. ^[1]; Kanter, Gregory S. ^[2]; Kumar, Prem ^[1]

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1. Northwestern U.
2. Northwestern U.; Euclid Techlabs, Solon

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 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.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1973626
• Report Number(s): FERMILAB-PUB-23-228-V; arXiv:2304.09076; oai:inspirehep.net:2652345
• Journal Information: TBD, Journal Name: TBD
• Country of Publication: United States
• Language: English