Unitary transformations can be identified locally

Abstract

We show that in principle, $N$-partite unitary transformations can be perfectly discriminated under local measurement and classical communication (LOCC) despite of their nonlocal properties. Based on this result, some related topics, including the construction of the appropriate quantum circuit together with the extension to general completely positive trace preserving operations, are discussed.

6 pages, 1 figure, errors modified

References in corpus (2)

• Experimental entanglement of six photons in graph states
• Quantum Computation as Geometry

Cited by in corpus (2)

• Linear-Optical Implementation of Perfect Discrimination between Single-bit Unitary Operations
• Ancilla-Assisted Discrimination of Quantum Gates