Levi, Federico
Article History
First Online: 1 September 2014
Change Date: 23 September 2014
Change Type: Correction
Change Details: In the News & Views 'The other sight' (Nature Physics 10, 622; 2014), we mistakenly described the experiment reported by Gabriela Barreto Lemos et al. (Nature 512, 409–412; 2014) as a four-photon experiment. It is, in fact, a two-photon experiment.
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