Development of a Boston-area 50-km fiber quantum network testbed

Eric Bersin, Matthew Grein, Madison Sutula, Ryan Murphy, Yan Qi Huan, Mark Stevens, Aziza Suleymanzade, Catherine Lee, Ralf Riedinger, David J. Starling, Pieter Jan Stas, Can M. Knaut, Neil Sinclair, Daniel R. Assumpcao, Yan Cheng Wei, Erik N. Knall, Bartholomeus Machielse, Denis D. Sukachev, David S. Levonian, Mihir K. BhaskarMarko Lončar, Scott Hamilton, Mikhail Lukin, Dirk Englund, P. Benjamin Dixon

Research output: Contribution to journalArticlepeer-review


Distributing quantum information between remote systems will necessitate the integration of emerging quantum components with existing communication infrastructure. This requires understanding the channel-induced degradations of the transmitted quantum signals, beyond the typical characterization methods for classical communication systems. Here we report on a comprehensive characterization of a Boston-Area Quantum Network (BARQNET) telecom fiber testbed, measuring the time-of-flight, polarization, and phase noise imparted on transmitted signals. We further design and demonstrate a compensation system that is both resilient to these noise sources and compatible with integration of emerging quantum memory components on the deployed link. These results have utility for future work on the BARQNET as well as other quantum network testbeds in development, enabling near-term quantum networking demonstrations and informing what areas of technology development will be most impactful in advancing future system capabilities.

Original languageEnglish (US)
Article number014024
JournalPhysical Review Applied
Issue number1
StatePublished - Jan 2024

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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