Scheme for implementing phase-covariant anti-cloning via a single nonresonant asymmetric atom–cavity coupling
Shi-Biao Zheng · Journal of Physics B Atomic Molecular and Optical Physics · 2007
A scheme is proposed for the implementation of phase-covariant anti-cloning in a single step. In the scheme N atoms dispersively interact with a cavity, with the coupling of the first atom different from that of the other atoms. Throughout the procedure the cavity is only virtually excited and thus the cavity decay is suppressed. The asymmetric nonresonant coupling can also be used to perform a one-step entangling operation.