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


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.

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X. Wang and S. Tang, "Remote Quantum-Information Concentration: Reversal of Ancilla-Free Phase-Covariant Telecloning," Open Journal of Microphysics, Vol. 3 No. 1, 2013, pp. 18-21. doi: 10.4236/ojm.2013.31004.

Conflicts of Interest

The authors declare no conflicts of interest.


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