2021/04/05 by Paul Fisher, Robert Cernansky, Ben Haylock +1 · 1 citation
Physics and Astronomy · #quant-ph #physics.optics
paper · pdf · doi:10.1103/physrevlett.127.023602
published as Phys. Rev. Lett. 127, 023602 (2021) · 5 pages, 4 figures
arxiv created 2021/04/05 · arxiv updated 2021/07/14
High-speed long-range quantum communication requires combining frequency multiplexed photonic channels with quantum memories. We experimentally demonstrate an integrated quantum frequency conversion protocol that can convert between wavelength division multiplexing channels in the telecom range with an efficiency of 55± 8% and a noise subtracted HOM dip visibility of 84.5%. This protocol is based on a cascaded second order nonlinear interaction and can be used to interface a broad spectrum of frequencies with narrowband quantum memories, or alternatively as a quantum optical transponder, efficiently interfacing different regions of a frequency-multiplexed spectrum.