期刊
INTERNATIONAL JOURNAL OF QUANTUM INFORMATION
卷 10, 期 8, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0219749912410109
关键词
Quantum reading; discrimination of optical devices; discrimination of beamsplitters
类别
资金
- Japanese Society for the Promotion of Science (JSPS)
- Spanish project [FIS2010-14830]
- Italian Ministry of Education
- European Community
- Grants-in-Aid for Scientific Research [12F02019] Funding Source: KAKEN
Quantum reading is the art of exploiting the quantum properties of light to retrieve classical information stored in an optical memory with low energy and high accuracy. Focusing on the ideal scenario where noise and loss are negligible, we review previous works on the optimal strategies for minimal-error retrieving of information (ambiguous quantum reading) and perfect but probabilistic retrieving of information (unambiguous quantum reading). The optimal strategies largely overcome the optimal coherent protocols (reminiscent of common CD readers), further allowing for perfect discrimination. Experimental proposals for optical implementations of optimal quantum reading are provided.
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