• Corpus ID: 118082872

A lattice gas model of a single Cooper pair box

  title={A lattice gas model of a single Cooper pair box},
  author={Robert Alicki},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  • R. Alicki
  • Published 16 November 2009
  • Physics
  • arXiv: Mesoscale and Nanoscale Physics
There exists a large number of experimental and theoretical results supporting the picture of "macroscopic qubits" implemented by nanoscopic Josephson junctions. On the other hand the standard model of such systems given in terms of a single degree of freedom suggests their semiclassical behavior due to a localization mechanism caused by a strong coupling to an environment. Indeed, such a mechanism is observed in an atomic Bose-Einstein condensate (BEC) placed in a double-well potential - a… 
BCS model of Cooper Pair Box
The standard phenomenological Hamiltonian of a small superconducting Josephson junction in the charge regime (Cooper Pair Box) produces a model of the effective charge qubit with possible
0-$\pi$ qubit in one Josephson junction
Quantum states are usually fragile which makes quantum computation being not as stable as classical computation. Quantum correction codes can protect quantum states but need a large number of