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

Journal Article · · Optics Express
DOI:https://doi.org/10.1364/OE.504625· OSTI ID:2228518

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.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
2228518
Alternate ID(s):
OSTI ID: 2582872
OSTI ID: 1973626
Journal Information:
Optics Express, Journal Name: Optics Express Journal Issue: 26 Vol. 31; ISSN 1094-4087; ISSN OPEXFF
Publisher:
Optical Society of AmericaCopyright Statement
Country of Publication:
United States
Language:
English

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