HSIC group has reported the first demonstration of high-speed optical data link from superconducting processor to room temperature based on the Cryogenic oxide-VCSEL for up to 20 Gb/s NRZ. The cryogenic VCSEL is optically coupled with OM4 fiber at 3-4 Kelvin. The oxide-VCSELs for cryogenic operation are very reliable over 15 thermal cycles between 2.6K and RT for 6-month period.

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The full article can be found at https://doi.org/10.1109/JQE.2022.3149512