Classification of delocalization power of global unitary operations in terms of LOCC one-piece relocalization
نویسندگان
چکیده
We study how two pieces of localized quantum information can be delocalized across a composite Hilbert space when a global unitary operation is applied. We classify the delocalization power of global unitary operations on quantum information by investigating the possibility of relocalizing one piece of the quantum information without using any global quantum resource. We show that onepiece relocalization is possible if and only if the global unitary operation is a local unitary equivalent of a controlled-unitary operation. The delocalization power turns out to reveal a different aspect of the non-local properties of global unitary operations characterized by their entangling power.
منابع مشابه
Delocalization power of global unitary operations on quantum information
We investigate how two pieces of localized quantum information represented by a tensor product of two unknown qudit states are delocalized by performing two-qudit global unitary operations. To characterize the delocalization power of global unitary operations on quantum information, we analyze the necessary and sufficient condition to deterministically relocalize one of the two pieces of quantu...
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