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@article{Ahmadi:2013:1/013057,
author = {Ahmadi, M and Jennings, D and Rudolph, T},
doi = {1/013057},
journal = {New Journal of Physics},
title = {The Wigner-Araki-Yanase theorem and the quantum resource theory of asymmetry},
url = {http://dx.doi.org/10.1088/1367-2630/15/1/013057},
volume = {15},
year = {2013}
}

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TY  - JOUR
AB  - The Wigner–Araki–Yanase (WAY) theorem establishes an importantconstraint that conservation laws impose on quantum mechanical measurements.We formulate the WAY theorem in the broader context of resource theories,where one is constrained to a subset of quantum mechanical operations describedby a symmetry group. Establishing connections with the theory of quantumstate discrimination we obtain optimal unitaries describing the measurementof arbitrary observables, explain how prior information can permit perfectmeasurements that circumvent the WAY constraint, and provide a frameworkthat establishes a natural ordering on measurement apparatuses through adecomposition into asymmetry and charge subsystems.
AU  - Ahmadi,M
AU  - Jennings,D
AU  - Rudolph,T
DO  - 1/013057
PY  - 2013///
SN  - 1367-2630
TI  - The Wigner-Araki-Yanase theorem and the quantum resource theory of asymmetry
T2  - New Journal of Physics
UR  - http://dx.doi.org/10.1088/1367-2630/15/1/013057
UR  - http://hdl.handle.net/10044/1/27322
VL  - 15
ER  -

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