A calculation of the energy decay rate of a Josephson qubit from non-equilibrium quasiparticles is made using the environmental P(E) theory. For a large-capacitance qubit, we extend the theory to include the tunneling of quasiparticles, which has an electron- and hole-like charge components.
@article{arxiv.0904.2035,
title = {Quasiparticle tunneling: P(E) theory},
author = {John M. Martinis},
journal= {arXiv preprint arXiv:0904.2035},
year = {2009}
}
Comments
3 pages, a supplementary calculation for arXiv:0904.2171 "Energy Decay in Josephson Qubits from Non-equilibrium Quasiparticles"; Version 2 adds a discussion of quasiparticle damping in a coplanar resonator