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Teleporting Noncommuting Qubits Require Maximal Entanglement

Sibasish Ghosh·Guruprasad Kar·Anirban Roy·Debasis Sarkar·Ujjwal Sen
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Abstract

Very recently, it was shown by Ghosh, Kar, Roy and Sen (\emph{Entanglement vs. Noncommutativity in Teleportation}, quant-ph/0010012) that if it is \emph{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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Sibasish Ghosh, Guruprasad Kar, Anirban Roy, Debasis Sarkar, Ujjwal Sen. 2000-12-21. Teleporting Noncommuting Qubits Require Maximal Entanglement. https://arxiv.org/abs/quant-ph/0012118

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