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Teleporting a quantum state from a subset of the whole Hilbert space. (English) Zbl 1181.81026
Summary: We investigate the lower bound of the amount of entanglement for faithfully teleporting a quantum state belonging to a subset of the whole Hilbert space. Moreover, when the quantum state belongs to a set composed of two states, a probabilistic teleportation scheme is presented using a non-maximally entangled state as the quantum channel.

MSC:
81P68 Quantum computation
81P15 Quantum measurement theory, state operations, state preparations
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