Eur. Phys. J. D 45, 347-353 (2007)
https://doi.org/10.1140/epjd/e2007-00256-8

Generalized quantum telecloning

¹ Department of Chemical Physics, Weizmann Institute of Science, Rehovot, 76100, Israel
² Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, 13083-970 Campinas São Paulo, Brazil

Corresponding author: ^a rigolin@ifi.unicamp.br

Received: 3 May 2007
Revised: 24 July 2007
Published online: 5 September 2007

Abstract

We present a generalized telecloning (GTC) protocol where the quantum channel is non-optimally entangled and we study how the fidelity of the telecloned states depends on the entanglement of the channel. We show that one can increase the fidelity of the telecloned states, achieving the optimal value in some situations, by properly choosing the measurement basis at Alice's, albeit turning the protocol to a probabilistic one. We also show how one can convert the GTC protocol to the teleportation protocol via proper unitary operations.