Quantum teleportation is the transfer of quantum information between twolocations by the use of shared entanglement. Current teleportation schemesbroadly fall under one of two categories, of either qubit or continuousvariables teleportation. Spin coherent states on spin ensembles can beteleported under the continuous variables approximation for states with smalldeviations from a given polarization. However, for spin coherent states withlarge deviations, no convenient teleportation protocol exists. Recently, weintroduced a teleportation scheme where a spin coherent state lying on theequator of the Bloch sphere is teleported between distant parties (A.N. Pyrkovand T. Byrnes, New. J. Phys. 16, 073038 (2014)). Here we generalize theprotocol to a spin coherent state with an arbitrary position on Bloch sphere.Our proposed scheme breaks classical bounds based on communication in theunconditional case and quantum state estimation with postselection.
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