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Derivation of the linear cross entropy

In case anyone else gets caught up on this detail: I spoke to Soonwon Choi and he explained that the "linear" cross-entropy is not a linearization of the cross-entropy. Rather it is called ``...
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Is there a non-deterministic protocol for entanglement generation between distant parties?

No. By definition, the set of states that you can produce under LOCC are the separable states. This includes all possible measurements, post-selection on certain outcomes etc. The whole point of ...
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Is there a non-deterministic protocol for entanglement generation between distant parties?

No, any such protocol would violate the holevo bound (1 bit of communication per 1 sent qubit, including qubits sent during preparation). You could just keep repeating the process until it gave you ...
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