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arXiv · 1610.06126

Criterion for Single Photon Sources

Juan Camilo López Carreño·Eduardo Zubizarreta Casalengua·Elena del Valle·Fabrice P. Laussy
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Abstract

We propose a criterion to classify and compare sources of single photons: the $p$-norm of their $k$th-order photon correlations. While ideally one should use the uniform norm with $p\rightarrow\infty$, in practice, the 3-norm already allows a meaningful comparison and shows the serious limitations of the usual criterion based on the second order correlation $g^{(2)}$ only. We apply this new criterion to a large family of popular single photon sources and show that some of them do not, in fact, qualify for this function. The best sources from our selections consist of a cascade of two-level systems, improving on the otherwise standard low-power resonant excitation of a single two-level system.

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Juan Camilo López Carreño, Eduardo Zubizarreta Casalengua, Elena del Valle, Fabrice P. Laussy. 2016-10-19. Criterion for Single Photon Sources. https://arxiv.org/abs/1610.06126

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