Experimental joint quantum measurements with minimum uncertainty.
نویسندگان
چکیده
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 three-state method and the weak-measurement method, and adapt them to realistic experimental conditions. Exceptional quantum state fidelities of up to 0.999 98(6) allow us to verge upon the fundamental limits of measurement uncertainty.
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عنوان ژورنال:
- Physical review letters
دوره 112 2 شماره
صفحات -
تاریخ انتشار 2014