Open questions

• Can a phonon of wave length 10^4 Angstrom couple to the currents?
  Yes, because we see it in the experiments by Chiurescu et al.
  Yes, because 10^4 Angstrom is the size of the qubit.
  Yes, because 10^{-5} eV = 100 mK = 100 ns is just the decoherence time measured by Chiurescu.
  Yes, because phonon+current-left is degenerate with current-right and arbitrary small interaction will couple the two currents.
  Yes, The junction can be normal conducting and coupling to phonons defines normal conduction.
  No, because 10^4 Angstrom is much larger than the Josephson junction and phonon coupling can only occur in the Josephson junction, because in the superconducting material the currents are protected against phonons.
  
• What are the actual materials and parameters used in D-Wave machine?
  What kind of metal? What transition temperature?
  What kind of material in the Josephson junction? What kind of phonon spectrum?
  What are the dimensions of the qubits and the Josephson junctions in the D-wave machine?
  Are the quantum flux devices of Chiurescu and D-Wave comparable?
  
• Why is there a difference between the decoherence behaviour of the Chiurescu single qubit and the D-wave many qubits?
  Because the incident photon resonantly excites the phonon (??) and otherwise a phonon will never be excited.
  
• What can be the nature of the environmental modes, if not phonons?
  NOT tomonagons (electron-hole excitations) because they have a dispersion relation similar to phonons.
  Quanta of the magnetic flux????
  > What are the magnitude of magnetic flux used in D-Wave machine?
  > What are the energies of the magnetic flux quanta?