Reading-out the state of a flux qubit by Josephson transmission line solitons

Details Reading-out the state of a flux qubit by Josephson transmission line solitons Reading-out the state of a flux qubit by Josephson transmission line solitons

2006-11-27

arxiv.org/abs/cond-mat/0611680v2

Phys. Rev. B 75, 224504 (2007)

Physics

Condensed Matter

Superconductivity

13 pages, 12 figures

Scientific paper

10.1103/PhysRevB.75.224504

We describe the read-out process of the state of a Josephson flux qubit via solitons in Josephson transmission lines (JTL) as they are in use in the standard rapid single flux quantum (RSFQ) technology. We consider the situation where the information about the state of the qubit is stored in the time delay of the soliton. We analyze dissipative underdamped JTLs, take into account their jitter, and provide estimates of the measuring time and efficiency of the measurement for relevant experimental parameters.

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