Physics – Condensed Matter – Superconductivity
Scientific paper
2002-04-24
Review of Scientific Instruments 74, 3740 (2003)
Physics
Condensed Matter
Superconductivity
10 pages, 8 figures, 1 table
Scientific paper
10.1063/1.1588752
We have developed a scheme for a high resolution measurement of the switching current distribution of a current biased Josephson tunnel junction using a timing technique. The measurement setup is implemented such that the digital control and read-out electronics are optically decoupled from the analog bias electronics attached to the sample. We have successfully used this technique to measure the thermal activation and the macroscopic quantum tunneling of the phase in a small Josephson tunnel junction with a high experimental resolution. This technique may be employed to characterize current-biased Josephson tunnel junctions for applications in quantum information processing.
Coqui C.
Duty Tim
Lukashenko Alexander
Ustinov Alexey V.
Wallraff Andreas
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