Convex probability domain of generalized quantum measurements

Jun, 1998
7 pages
Published in:
  • J.Phys.A 31 (1998) L671-L675
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Abstract:
Generalized quantum measurements with N distinct outcomes are used for determining the density matrix, of order d, of an ensemble of quantum systems. The resulting probabilities are represented by a point in an N-dimensional space. It is shown that this point lies in a convex domain having at most d^2-1 dimensions.
Note:
  • 7 pages LaTeX, one PostScript figure on separate page
      • IEEE Trans.Info.Theor. 24 239