Publikationsdatenbank

The presence of quasiparticles in superconducting qubits emerges as an intrinsic constraint on their coherence. While it is difficult to prevent the generation of quasiparticles, keeping them away from active elements of the qubit provides a viable way of improving the device performance. [...]

Work already published under the above topic by W. LUDWIG and the author$^{1}$ was limited to crystal temperatures above the Debye temperature, as it treated the lattice vibrations by classical statistics. [...]

Being part of the plasma-wall interaction during TOKAMAK operation, erosion- and redeposition processes of First Wall materials substantially influence plasma parameters as well as the properties of the First Wall. An important redeposition process of eroded material isthe formation of thin films by atomic condensation. [...]

It is reported about important results for practical application of hydrogen/tritium permeation through the alloy Hastelloy X. Permeation data dependent on temperature and pressure have been generated and are presented as well for bright as oxide coated alloy specimen. [...]