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 001; Ralf Riedinger; David J. Starling; Pieter-Jan Stas; Can M. Knaut; et al. (CoRR, 2023)