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Identification and Distance Measures of Measurement Apparatus

Zhengfeng Ji·Yuan Feng·Runyao Duan·Mingsheng Ying
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Abstract

We propose simple schemes that can perfectly identify projective measurement apparatus secretly chosen from a finite set. Entanglements are used in these schemes both to make possible the perfect identification and to improve the efficiency significantly. A brief discussion on the problem of how to appropriately define distance measures of measurements is also provided based on the results of identification.

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Zhengfeng Ji, Yuan Feng, Runyao Duan, Mingsheng Ying. 2006-04-05. Identification and Distance Measures of Measurement Apparatus. https://doi.org/10.1103/physrevlett.96.200401

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