Optimal unbiased state characterization
arXiv:1308.6530 · doi:10.1088/0031-8949/2013/T153/014055
Abstract
We propose a general approach to characterize states of a bipartite system composed by a fully controllable and an unaccessible subsystems. The method is based on the measuring interference between states of the uncontrollable subsystem obtained after projecting an appropriately transformed bipartite state on the basis of the accessible subsystem by local operations.
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