Teleporting Noncommuting Qubits Require Maximal Entanglement
Sibasish Ghosh, Guruprasad Kar, Anirban Roy, Debasis Sarkar, Ujjwal Sen
Abstract
Very recently, it was shown by Ghosh, Kar, Roy and Sen (Entanglement vs. Noncommutativity in Teleportation, quant-ph/0010012) that if it is a priori known that the state to be teleported is from a commuting set of qubits, a separable channel is sufficient. We show that 1 ebit of entanglement is a necessary resource to teleport a qubit even when it is known to be one of two noncommuting states.
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