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quant-ph2005★ 23 cited
Cloning quantum entanglement in arbitrary dimensions
E. Karpov, P. Navez, N. J. Cerf
We have found a quantum cloning machine that optimally duplicates the entanglement of a pair of -dimensional quantum systems. It maximizes the entanglement of formation containe…
quant-ph2004
Zeno era and non-decaying subspaces for multilevel Friedrichs model
I. Antoniou, E. Karpov, G. Pronko +1
We study the short-time and medium-time behavior of the survival probability of decaying states in the framework of the -level Friedrichs model. The degenerated and nearly degen…