Demonstrated control of a Transmon using a Reciprocal Quantum Logic digital circuit - Part 2

We demonstrate coherent manipulation of a 2D asymmetric Transmon qubit using a Reciprocal Quantum Logic (RQL) [1] distributed output amplifier mounted at 20 mK. The RQL amplifier provided active isolation and amplification for signals generated by room temperature equipment. We measured a 30{\%} suppression of the Transmon lifetime when connected to the RQL circuit, which we primarily attributed to static power dissipation associated with the on-chip 50 Ohm source termination of the amplifier. \\[4pt] [1] J. Appl. Phys 109, 103903 (2011)