期刊
PHYSICAL REVIEW LETTERS
卷 106, 期 22, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.220403
关键词
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资金
- NSERC
- QuantumWorks
- CIFAR
- Ontario Centres of Excellence
- Spanish government [FIS2008-01236/FIS]
- Catalan government [2009SGR-0985]
- United Kingdom EPSRC
- European Commission
- ERC
- Philip Leverhulme Trust
- Royal Society
- Integrated Project QESSENCE
- University of Innsbruck
We devise a protocol in which general nonclassical multipartite correlations produce a physically relevant effect, leading to the creation of bipartite entanglement. In particular, we show that the relative entropy of quantumness, which measures all nonclassical correlations among subsystems of a quantum system, is equivalent to and can be operationally interpreted as the minimum distillable entanglement generated between the system and local ancillae in our protocol. We emphasize the key role of state mixedness in maximizing nonclassicality: Mixed entangled states can be arbitrarily more nonclassical than separable and pure entangled states.
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