Running-phase state in a Josephson washboard potential

Details Running-phase state in a Josephson washboard potential Running-phase state in a Josephson washboard potential

2005-01-12

arxiv.org/abs/cond-mat/0501280v1

Phys. Rev. B 72, 134528 (2005)

Physics

Condensed Matter

Superconductivity

6 pages, 3 figures

Scientific paper

10.1103/PhysRevB.72.134528

We investigate the dynamics of the phase variable of an ideal underdamped Josephson junction in switching current experiments. These experiments have provided the first evidence for macroscopic quantum tunneling in large Josephson junctions and are currently used for state read-out of superconducting qubits. We calculate the shape of the resulting macroscopic wavepacket and find that the propagation of the wavepacket long enough after a switching event leads to an average voltage increasing linearly with time.

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