Experimental test of the collapse time of a delocalized photon state

We investigate whether the collapse of the quantum state of a single photon split between two space-like separated places takes a nonvanishing time. We realize this by using a source of heralded single photons, then splitting the resulting single photon state and letting it propagate over distances...

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Detalles Bibliográficos
Autores principales: Garrisi, Francesco, Massara, Micol Previde, Zambianchi, Alberto, Galli, Matteo, Bajoni, Daniele, Rimini, Alberto, Nicrosini, Oreste
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6695446/
https://www.ncbi.nlm.nih.gov/pubmed/31417130
http://dx.doi.org/10.1038/s41598-019-48387-8
Descripción
Sumario:We investigate whether the collapse of the quantum state of a single photon split between two space-like separated places takes a nonvanishing time. We realize this by using a source of heralded single photons, then splitting the resulting single photon state and letting it propagate over distances much larger than the experimental time resolution times the speed of light c. We find no additional delay within our accuracy and set a lower limit for the speed of collapse of the quantum state to 1550c.

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