Joint quantum measurements with minimum uncertainty
arXiv:1308.5688 · doi:10.1103/PhysRevLett.112.020401
Abstract
Quantum physics constrains the accuracy of joint measurements of incompatible observables. Here we test tight measurement-uncertainty relations using single photons. We implement two independent, idealized uncertainty-estimation methods, the 3-state method and the weak-measurement method, and adapt them to realistic experimental conditions. Exceptional quantum state fidelities of up to 0.99998(6) allow us to verge upon the fundamental limits of measurement uncertainty.
13 pages, 12 figures
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