Journal
SCIENCE
Volume 323, Issue 5913, Pages 483-485Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1167182
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Funding
- Japan Science and Technology Agency
- Ministry of Internal Affairs and Communication
- Japan Society for the Promotion of Science
- 21st Century Center of Excellence Program
- Promoting Science and Technology, Japan
- Engineering and Physical Sciences Research Council, UK
- EPSRC [EP/F008023/1, EP/F010524/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F010524/1, EP/F008023/1] Funding Source: researchfish
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The ability to filter quantum states is a key capability in quantum information science and technology, in which one- qubit filters, or polarizers, have found wide application. Filtering on the basis of entanglement requires extension to multi- qubit filters with qubit- qubit interactions. We demonstrated an optical entanglement filter that passes a pair of photons if they have the desired correlations of their polarization. Such devices have many important applications to quantum technologies.
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