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Steudle, G. A., Schietinger, S., Höckel, D., Dorenbos, S. N., Zadeh, I. E., Zwiller, V., et al. (2012). Measuring the quantum nature of light with a single source and a single detector. Phys. Rev. A, 86(5), 053814.
Abstract: An elementary experiment in optics consists of a light source and a detector. Yet, if the source generates nonclassical correlations such an experiment is capable of unambiguously demonstrating the quantum nature of light. We realized such an experiment with a defect center in diamond and a superconducting detector. Previous experiments relied on more complex setups, such as the Hanbury Brown and Twiss configuration, where a beam splitter directs light to two photodetectors, creating the false impression that the beam splitter is a fundamentally required element. As an additional benefit, our results provide a simplification of the widely used photon-correlation techniques.
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