Extreme phase and rotated quadrature measurements
: Pellonpaa JP
Publisher: IOP PUBLISHING LTD
: 2010
: Physica Scripta
: PHYSICA SCRIPTA
: PHYS SCRIPTA
: ARTN 014032
: T140
: 4
: 0031-8949
DOI: https://doi.org/10.1088/0031-8949/2010/T140/014032
: https://arxiv.org/abs/0911.0574
We determine the extreme points of the convex set of covariant phase observables. Such extremals describe the best phase parameter measurements of laser light-the best in the sense that they are free from classical randomness due to fluctuations in the measuring procedure. We also characterize extreme fuzzy rotated quadratures.