KONSTADOPOULOU, A. ... et al., 2001. Mesoscopic Josephson arrays interacting with non-classical electromagnetic fields and their applications. IEE Proceedings Science Measurement and Technology, 148 (5), pp. 229 - 232.
A ring made from a Josephson array in the insulating phase is considered. The ring
contains a ‘dual Josephson junction’ (Josephson junction for vortices). External non-classical
electromagnetic fields are coupled to the device and interact with the vortices that circulate the ring.
The time evolution of ths two-mode fully quantum mechanical system is studied. The effect of the
quantum statistics of the photons on the quantum statistics of the vortices is discussed. The
entanglement between the two systems is quantified.