Continuous-Variable Telecloning with Phase-Conjugate Inputs

Details Continuous-Variable Telecloning with Phase-Conjugate Inputs Continuous-Variable Telecloning with Phase-Conjugate Inputs

2008-01-08

arxiv.org/abs/0801.1104v1

Phys. Rev. A 77, 022316 (2008)

Physics

Quantum Physics

7 pages, 4 figures, appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.77.022316

We propose a scheme for continuous-variable telecloning with phase-conjugate inputs (PCI). Two cases of PCI telecloning are considered. The first case is where PCI telecloning produces $M$ clones nonlocally and $M$ anticlones locally, or vice versa. This kind of PCI telecloning requires only one EPR (Einstein-Podolsky-Rosen) entangled, two-mode squeezed state as a resource for building the appropriate multi-mode, multipartite entangled state via linear optics. The other case is a PCI telecloning protocol in which both clones and anticlones are created nonlocally. Such a scheme requires two EPR entangled states for the generation of a suitable multipartite entangled state. As our schemes are reversible, optimal cloning fidelities are achieved in the limit of infinite squeezing.

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