期刊
SCIENCE ADVANCES
卷 5, 期 7, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aaw2563
关键词
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资金
- European Union Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie Action (Individual MSCA Fellowship) of the Leverhulme Trust [706410, ECF-2018-634]
- European Union Horizon 2020 Research and Innovation Program under the Marie Sklodowska-Curie Action (Individual MSCA Fellowship) of Lord Kelvin/Adam Smith Leadership Fellowship Scheme [706410]
- EPSRC QuantIC [EP/M01326X/1]
- ERC TWISTS [340507]
- UK EPSRC [EP/L016753/1, EP/N509668/1]
- Professor Jim Gatheral Quantum Technology Studentship
- Marie Curie Actions (MSCA) [706410] Funding Source: Marie Curie Actions (MSCA)
- European Research Council (ERC) [340507] Funding Source: European Research Council (ERC)
The violation of a Bell inequality not only attests to the nonclassical nature of a system but also holds a very unique status within the quantum world. The amount by which the inequality is violated often provides a good benchmark on how a quantum protocol will perform. Acquiring images of such a fundamental quantum effect is a demonstration that images can capture and exploit the essence of the quantum world. Here, we report an experiment demonstrating the violation of a Bell inequality within observed images. It is based on acquiring full-field coincidence images of a phase object probed by photons from an entangled pair source. The image exhibits a violation of a Bell inequality with S = 2.44 +/- 0.04. This result both opens the way to new quantum imaging schemes based on the violation of a Bell inequality and suggests promise for quantum information schemes based on spatial variables.
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