Geodesic
Optimal quantum measurements
Teoretičeskaâ i matematičeskaâ fizika, Tome 17 (1973) no. 3, pp. 319-326

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An optimal compatible measurement, in the sense of the mean-square error, of canonical variables $p$ and $q$ is found. It is shown that this measurement is described by an operator-valued measure defined by a family of coherent states. Problems of optimal measurements of the parameters of quasifree states are also considered. 
@article{TMF_1973_17_3_a1,
     author = {A. S. Holevo},
     title = {Optimal quantum measurements},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {319--326},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1973_17_3_a1/}
}
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A. S. Holevo. Optimal quantum measurements. Teoretičeskaâ i matematičeskaâ fizika, Tome 17 (1973) no. 3, pp. 319-326. http://geodesic.mathdoc.fr/item/TMF_1973_17_3_a1/