Two-state Teleportation
نویسندگان
چکیده
Quantum teleportation with additional a priori information about the input state achieves higher fidelity than teleportation of a completely unknown state. However, perfect teleportation of two non-orthogonal input states requires the same amount of en-tanglement as perfect teleportation of an unknown state, namely one ebit. We analyse how well two-state teleportation can be achieved using every degree of pure-state entanglement. We find the highest fidelity of 'teleportation' that can be achieved with only classical communication but no shared entanglement. A two-state telecloning scheme is shown to require less entanglement in a certain sense than universal telecloning.
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