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has been cited by the following article:

• TITLE: Remote Quantum-Information Concentration: Reversal of Ancilla-Free Phase-Covariant Telecloning

  AUTHORS: Xinwen Wang, Shiqing Tang

  KEYWORDS: Remote Quantum-Information Concentration; Phase-Covariant Telecloning; W State

  JOURNAL NAME: Open Journal of Microphysics, Vol.3 No.1, February 27, 2013

  ABSTRACT: Telecloning and its reverse process, referred to as remote quantum-information concentration (RQIC), have been attracting considerable interest because of their potential applications in quantum-information processing. The previous RQIC protocols were focused on the reverse process of the optimal universal telecloning. We here study the reverse process of ancilla-free phase-covariant telecloning (AFPCT). It is shown that the quantum information originally distributed into two spatially separated qubits from a single qubit via the optimal AFPCT procedure can be remotely concentrated back to a single qubit with a certain probability by using an asymmetric W state as the quantum channel.