Quantum information processing via superconducting quantum interference device coupled to imperfect cavity

We investigate schemes for quantum information processing via radio frequency superconducting quantum interference device (rf-SQUID) coupled to imperfect cavity and liner optics devices. Our schemes combine two distinct advantages: rf-SQUID qubit with long coherent time sevres as memory bit and photonic qubit as flying bit, thus they are suitable for long distant quantum communication. Our schemes also requires less experimental demands, thus they can be demonstrated experimentally within current techniques.