• DOI:10.1103/PhysRevLett.109.050601
• Corpus ID: 28168359

Direct transition from quantum escape to a phase diffusion regime in YBaCuO biepitaxial Josephson junctions.

@article{Longobardi2012DirectTF,
  title={Direct transition from quantum escape to a phase diffusion regime in YBaCuO biepitaxial Josephson junctions.},
  author={Luigi Longobardi and Davide Massarotti and D. Stornaiuolo and Luca Galletti and Giacomo Rotoli and Floriana Lombardi and Francesco Tafuri},
  journal={Physical review letters},
  year={2012},
  volume={109 5},
  pages={
          050601
        }
}

• L. Longobardi, D. Massarotti, +4 authors F. Tafuri
• Published 1 August 2012
• Physics
• Physical review letters

Dissipation encodes the interaction of a quantum system with the environment and regulates the activation regimes of a Brownian particle. We have engineered grain boundary biepitaxial YBaCuO junctions to drive a direct transition from a quantum activated running state to a phase diffusion regime. The crossover to the quantum regime is tuned by the magnetic field and dissipation is described by a fully consistent set of junction parameters. To unravel phase dynamics in moderately damped systems is of general interest for advances in the comprehension of retrapping phenomena and in view of quantum hybrid technology.