Realizing a partial general quantum cloning machine with superconducting quantum-interference devices in a cavity QED
Bao‐Long Fang, Zhen‐Biao Yang, Liu Ye · Physical Review A · 2009
We propose a scheme for implementing a partial general quantum cloning machine with superconducting quantum-interference devices coupled to a nonresonant cavity. By regulating the time parameters, our system can perform optimal symmetric (asymmetric) universal quantum cloning, optimal symmetric (asymmetric) phase-covariant cloning, and optimal symmetric economical phase-covariant cloning. In the scheme the cavity is only virtually excited, thus, the cavity decay is suppressed during the cloning operations.