Multiplexed and broadband quantum storage of single-photons at telecom C-band

We prepare five separated 10-GHz atomic frequency combs (AFCs) simultaneously in Er
³⁺
-doped fiber, then demonstrate temporally- and spectrally-multiplexed storage of telecom-band single-photons up to 1650 modes. Our results pave the way for quantum repeaters with multiplexed and broadband quantum memory.