Tunneling out of metastable vacuum in a system consisting of two capacitively coupled phase qubits

Details Tunneling out of metastable vacuum in a system consisting of two capacitively coupled phase qubits Tunneling out of metastable vacuum in a system consisting of two capacitively coupled phase qubits

2005-09-26

arxiv.org/abs/cond-mat/0509659v3

Physics

Condensed Matter

Superconductivity

10 pages, 5 figures (select PostScript to download Fig. 1). Corrected version, to appear in PRB

Scientific paper

10.1103/PhysRevB.73.064509

Using a powerful combination of Coleman's instanton technique and the method
of Banks and Bender, the exponential factor for the zero temperature rate of
tunneling out of metastable vacuum in a system of two identical capacitively
coupled phase qubits is calculated in closed form to second order in asymmetry
parameter for a special case of intermediate coupling C=C_J/2.

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