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|Title:||Joint measurement of two unsharp observables of a qubit|
|Authors:||Yu, S. |
|Source:||Yu, S., Liu, N.-L., Li, L., Oh, C.H. (2010-06-14). Joint measurement of two unsharp observables of a qubit. Physical Review A - Atomic, Molecular, and Optical Physics 81 (6) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.81.062116|
|Abstract:||We derive a single inequality as the sufficient and necessary condition for two unsharp observables of a two-level system to be jointly measurable in a single apparatus and construct explicitly the joint observables of two jointly measurable observables. By introducing a generalized distinguishability as a measure of the unsharpness of an unsharp measurement, we derive a complementarity inequality, which generalizes Englert's duality inequality, from the condition of joint measurement of two orthogonal unsharp observables. © 2010 The American Physical Society.|
|Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics|
|Appears in Collections:||Staff Publications|
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