โ Scribed by Noriyuki Hatakenaka; Hideaki Takayanagi
No coin nor oath required. For personal study only.
The Josephson effect is one manifestation of the quantum aspect of macroscopic objects.
It has been tested in various macroscopic systems to confirm their quantummechanical nature. In some of the systems, the total number of particles in the system is fixed. In such a case, the dynamics of the system is restricted and hence a new dynamical state might be expected to appear. In this paper, we discuss the Josephson effect under a particle-number restriction, and explore the new dynamical state that emerges from the restriction. We also discuss macroscopic quantum tunneling from the state.
๐ SIMILAR VOLUMES
Photon-assisted macroscopic quantum tunneling in a slightly current-biased Josephson junction with a small capacitance and a low damping factor is proposed to occur between the quantized energy levels in adjacent potential wells by photon absorption or emission. The tunneling rate is calculated by t
We have theoretically investigated macroscopic quantum tunneling (MQT) for a stack of capacitively and inductively coupled intrinsic-junctions. By use of the functional integral method, we have analytically derived the MQT escape rate and found that the inductive coupling reduces the potential barri