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Throughput Measurements and Capacity Estimates for Quantum Connections

Conference ·
 [1];  [1];  [1];  [1];  [1]
  1. ORNL
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The throughput of conventional and quantum network connections is an important performance metric, which is typically specified by bits per second (bps) and entangled quntum bits per second (ebps), respectively. It is measured over practical quantum network connections using specialized methods, and estimated using analytical bounds for which extensive theory has been developed. For practical connections, however, these two quantities have often been hard to correlate due to the lack of measurements and estimates derived under well-characterized common conditions. They both differ significantly from the conventional network throughput of TCP which employs buffers and loss recovery mechanisms. We describe a conventional-quantum testbed that enables the comparison of these two quantities both qualitatively and quantitatively. The bps and ebps throughput is measured over fiber connections of lengths over 75 kilometers, which show that the former decreases significantly slower with distance than the latter and in a qualitatively different way. The analytic capacity estimates of ebps are derived using approximations based on light intensity measurements, and they decrease more rapidly with distance than the measured ebps throughput. These results provide qualitative insights into the conventional transport mechanisms based on buffers, and the conditions used in deriving the analytical ebps capacity estimates.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
AC05-00OR22725
OSTI ID:
2001398
Resource Relation:
Conference: The Second IEEE International Workshop on Network Science for Quantum Communication Networks (NetSciQCom 2023) - New York, New York, United States of America - 5/17/2023 4:00:00 AM-5/20/2023 4:00:00 AM
Country of Publication:
United States
Language:
English

References (7)

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The Limits of the Nonlinear Shannon Limit conference January 2016
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Lessons Learned on the Interface Between Quantum and Conventional Networking
  • Alshowkan, Muneer; Rao, Nageswara S. V.; Chapman, Joseph C.
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book January 2022
Fundamental limits of repeaterless quantum communications journal April 2017
Throughput Analytics of Data Transfer Infrastructures book January 2019

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