Can I read Enhancement of Macroscopic Quantum Tunneling by Landau-Zener Transitions on EtoBox?

Enhancement of Macroscopic Quantum Tunneling by Landau-Zener Transitions by Ankerhold, Joachim; Grabert, Hermann is a scholarly article available to read on EtoBox.

What is Enhancement of Macroscopic Quantum Tunneling by Landau-Zener Transitions about?

Motivated by recent realizations of qubits with a readout by macroscopic quantum tunneling in a Josephson junction, we study the problem of barrier penetration in presence of coupling to a spin-${1\over 2}$ system. It is shown that when the diabatic potentials for fixed spin intersect in the barrier region, Landau- -Zener transitions lead to an enhancement of the tunneling rate. The effect of these spin flips in imaginary time is in qualitative agreement with experimental observations.

Author

Ankerhold, Joachim; Grabert, Hermann

Published

2003

Language

EN