期刊
PHYSICAL REVIEW LETTERS
卷 104, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.020401
关键词
-
资金
- Grant-in-Aid for Scientific Research [17071005]
- MEXT, Japan
- JSPS [216681, 208038]
We identify the optimal measurement for obtaining information about the original quantum state after the state to be measured has undergone partial decoherence due to noise. We quantify the information that can be obtained by the measurement in terms of the Fisher information and find its value for the optimal measurement. We apply our results to a quantum control scheme based on a spin-boson model.
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