Abstract
We consider pairs of discrete quantum observables (POVMs) and analyze the relation between the notions of nondisturbance, joint measurability, and commutativity. We specify conditions under which these properties coincide or differ-depending, for instance, on the interplay between the number of outcomes and the Hilbert space dimension or on algebraic properties of the effect operators. We also show that (non-)disturbance is, in general, not a symmetric relation and that it can be decided and quantified by means of a semidefinite program.
Original language | English |
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Journal | Journal of Mathematical Physics |
Volume | 51 |
Issue number | 9 |
Pages (from-to) | 092201 |
ISSN | 0022-2488 |
DOIs | |
Publication status | Published - 1 Sept 2010 |