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' (<i>Nature Physics</i> <b>10</b>, 622; 2014), we mistakenly described the experiment reported by Gabriela Barreto Lemos <i>et al</i>. (<i>Nature</i> <b>512</b>, 409–412; 2014) as a four-photon experiment. It is, in fact, a two-photon experiment.