Theory of Macroscopic Quantum Dynamics in High-Tc Josephson Junctions

Shiro Kawabata

doi:10.1142/9789814282130_0050

Theory of Macroscopic Quantum Dynamics in High-Tc Josephson Junctions

Mesoscale and Nanoscale Physics 2017-08-23 v1 Superconductivity Quantum Physics

Authors: Shiro Kawabata

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Abstract

We have theoretically investigated macroscopic quantum tunneling (MQT) and the influence of nodal quasiparticles and zero energy bound states (ZES) on MQT in s-wave/d-wave hybrid Josephson junctions. In contrast to d-wave/d-wave junctions, the low-energy quasiparticle dissipation resulting from nodal quasiparticles and ZES is suppressed due to a quasiparticle-tunneling blockade effect in an isotropic s-wave superconductor. Therefore, the inherent dissipation in these junctions is found to be weak. This result suggests high potential of s-wave/d-wave hybrid junctions for applications in quantum information devices.

Keywords

macroscopic quantum tunneling Josephson junctions nodal quasiparticles zero energy bound states s-wave/d-wave hybrid junctions quantum information devices

Cite

@article{arxiv.0912.4565,
  title  = {Theory of Macroscopic Quantum Dynamics in High-Tc Josephson Junctions},
  author = {Shiro Kawabata},
  journal= {arXiv preprint arXiv:0912.4565},
  year   = {2017}
}

Comments

4 pages, 1 figure, conference proceedings of ISQM-Tokyo '08

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