Optimal 1 → 3 economical phase-covariant quantum cloning with superconducting quantum interference devices in a cavity
Ye Liu, Li Jin, Wen‐Hai Zhang · Journal of Modern Optics · 2009
We propose a scheme to implement the optimal 1 → 3 economical phase-covariant quantum cloning with superconducting quantum interference devices (SQUIDs) in a cavity. During the process, no transfer of quantum information between the SQUIDs and cavity is required. The cavity field is only virtually excited. The scheme is insensitive to cavity decay. Therefore, the scheme can be experimentally realized in the range of current cavity QED techniques.