Continuous-Variable Entanglement Transfer from Cavity Field to Two Mesoscopic Josephson Junctions
Ping Chang, Shao Bin, Zhao-Ming Wang, Zou Jian · Chinese Physics Letters · 2008
We consider a composite system of two remote mesoscopic Josephson junctions interacting locally with a two-mode non-classical cavity field and investigate entanglement transfer from a bipartite continuous-variable (CV) system to a pair of localized mesoscopic Josephson junctions. We obtain analytically the time-dependent characteristic functions in the Wigner representation for the two CV subsystems, where two cases are considered for the zero and finite temperatures. Furthermore, we analyse the influences of the temperature on the period recovery of the entanglement.