Intrinsic Quantum Dissipation in Superconducting Weak Links

Artem V. Galaktionov*, Dmitry S. Golubev, Andrei D. Zaikin

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review


We evaluate the frequency spectrum for an intrinsic quantum dissipative environment for the Josephson phase φ formed by subgap Andreev bound states in superconducting weak links. We also analyze the problem of macroscopic quantum tunneling (MQT) of φ in highly transparent weak links and identify several MQT regimes. Within the exponential accuracy, we derive the expression for the supercurrent quantum decay rate both at low temperatures and in the vicinity of the quantum-to-classical crossover.

Original languageEnglish
Pages (from-to)715–721
Number of pages7
JournalJournal of Superconductivity and Novel Magnetism
Issue number3
Publication statusPublished - 2018
MoE publication typeA1 Journal article-refereed


  • Dissipation
  • Josephson effect
  • Macroscopic quantum tunneling
  • Superconductivity


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