Off-diagonal geometric phase in composite systems
arXiv:quant-ph/0407231 · doi:10.1103/PhysRevA.70.012108
Abstract
The effect due to the inter-subsystem coupling on the off-diagonal geometric phase in a composite system is investigated. We analyze the case where the system undergo an adiabatic evolution. Two coupled qubits driven by time-dependent external magnetic fields are presented as an example, the off-diagonal geometric phase as well as the adiabatic condition are examined and discussed.