Verification of stable operation of rapid single flux quantum devices with selective dissipation

Details Verification of stable operation of rapid single flux quantum devices with selective dissipation Verification of stable operation of rapid single flux quantum devices with selective dissipation

2007-02-05

arxiv.org/abs/cond-mat/0702104v1

New J. Phys. 9, 157 (2007)

Physics

Condensed Matter

Superconductivity

4 pages, 3 figures

Scientific paper

10.1088/1367-2630/9/5/157

It has been suggested that Rapid Single Flux Quantum (RSFQ) devices could be used as the classical interface of superconducting qubit systems. One problem is that the interface acts as a dissipative environment for a qubit. Recently ways to modify the RSFQ damping to reduce the dissipation have been introduced. One of the solutions is to damp the Josephson junctions by a frequency-dependent linear circuit instead of the plain resistor. The approach has previously been experimentally tested with a simple SFQ comparator. In this paper we perform experiments with a full RSFQ circuit, and thus conclude that in terms of stable operation the approach is applicable for scalable RSFQ circuits. Realisation and optimisation issues are also discussed.

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