期刊
PHYSICAL REVIEW LETTERS
卷 118, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.118.030502
关键词
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资金
- Australian Research Council Centre of Excellence for Quantum Computation and Communication Technology [CE110001027]
- China Scholarship Council
In the task of discriminating between nonorthogonal quantum states from multiple copies, the key parameters are the error probability and the resources (number of copies) used. Previous studies have considered the task of minimizing the average error probability for fixed resources. Here we introduce a new state discrimination task: minimizing the average resources for a fixed admissible error probability. We show that this new task is not performed optimally by previously known strategies, and derive and experimentally test a detection scheme that performs better.
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