Pancharatnam phase in a mesoscopic Josephson junction with quantized electromagnetic field

Pancharatnam phase in a mesoscopic Josephson junction (Mn) in the presence of a single-mode quantized electromagnetic field is investigated. It is sho wn that when the field is initially prepared in a pure coherent state and t he junction initially in its lowest energy level state, the time evolution of the Pancharatnam phase exhibits the interesting collapse and revival phe nomenon. (C) 2000 Elsevier Science B.V. All rights reserved.