Linear maps preserving separability of pure states

Published 8 Oct 2012 in quant-ph, math.FA, and math.OA | (1210.2155v2)

Abstract: Linear maps preserving pure states of a quantum system of any dimension are characterized. This is then used to establish a structure theorem for linear maps that preserve separable pure states in multipartite systems. As an application, a characterization of separable pure state preserving affine maps is obtained.

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