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https://doi.org/10.1103/PhysRevA.81.062116
Title: | Joint measurement of two unsharp observables of a qubit | Authors: | Yu, S. Liu, N.-L. Li, L. Oh, C.H. |
Issue Date: | 14-Jun-2010 | Citation: | 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 | URI: | http://scholarbank.nus.edu.sg/handle/10635/53007 | ISSN: | 10502947 | DOI: | 10.1103/PhysRevA.81.062116 |
Appears in Collections: | Staff Publications |
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