Energy relaxation of a superconducting charge qubit via Andreev processes
R. M. Lutchyn, L. I. Glazman
DOI 10.1103/PhysRevB.76.104507 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We study fundamental limitations on the energy relaxation rate of a superconducting charge qubit with a large-gap Cooper-pair box, Δb>Δr. At a sufficiently large mismatch between the gap energies in the box Δb and in the reservoir Δr, “quasiparticle poisoning" becomes ineffective even in the presence of nonequilibrium quasiparticles in the reservoir. The qubit relaxation still may occur due to higher-order (Andreev) processes. In this paper, we evaluate the qubit energy relaxation rate T1−1 due to Andreev processes.
Similar papers
Energy relaxation of superconducting charge qubit via Andreev processes
similarity 0.95R. M. Lutchyn & L. I. Glazman · 2007 · arXiv:0706.0522
Source status unknown — claims are unverified
Kinetics of non-equilibrium quasiparticle tunneling in superconducting charge qubits
similarity 0.90M. D. Shaw et al. · 2008 · arXiv:0803.3102
Source status unknown — claims are unverified
Microscopic Theory of the Andreev Gap
similarity 0.90Tobias Micklitz & Alexander Altland
Source status unknown — claims are unverified
Andreev level spectrum and Josephson current in a superconducting ballistic point contact
similarity 0.88Magnus Hurd & Göran Wendin
Source status unknown — claims are unverified
Electronic and fluctuation dynamics following a quench to the superconducting phase
similarity 0.88Christopher Stahl & Martin Eckstein
Source status unknown — claims are unverified
Giant Andreev Backscattering through a Quantum Point Contact Coupled via a Disordered Two-Dimensional Electron Gas to Superconductors
similarity 0.87S. G. den Hartog et al.
Source status unknown — claims are unverified