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EnglishIn single-particle or intraparticle entanglement, two degrees of freedom of a single particle, e.g., momentum and polarization of a single photon, are entangled. Single-particle entanglement is a resource that can be exploited both in quantum communication protocols and in experimental tests of noncontextuality based on the Kochen-Specker theorem. Here we show that single-particle entangled states of single photons can be produced from attenuated classical sources of light. To experimentally certify the single-particle entanglement, we perform a Bell test, observing a violation of the Clauser, Horne, Shimony, and Holt inequality. We show that single-particle entanglement can be achieved even in a classical light beam, provided that first-order coherence is maintained between the degrees of freedom involved in the entanglement. This demonstrates that cheap, compact, and low-power photon sources can be used to generate single-particle entangled photons which could be a resource for quantum technology applications.
Bell inequality violation by entangled single-photon states generated from a laser, a LED or a Halogen lamp / Pasini, Matteo; Leone, Nicolo; Mazzucchi, Sonia; Moretti, Valter; Pastorello, Davide; Pavesi, Lorenzo. - In: PHYSICAL REVIEW A. - ISSN 2469-9926. - 102:6(2020), pp. 063708.1-063708.15. [10.1103/PhysRevA.102.063708]
| Titolo: | Bell inequality violation by entangled single-photon states generated from a laser, a LED or a Halogen lamp | |
| Autori: | Pasini, Matteo; Leone, Nicolo; Mazzucchi, Sonia; Moretti, Valter; Pastorello, Davide; Pavesi, Lorenzo | |
| Autori Unitn: | ||
| Titolo del periodico: | PHYSICAL REVIEW A | |
| Anno di pubblicazione: | 2020 | |
| Numero e parte del fascicolo: | 6 | |
| Codice identificativo Scopus: | 2-s2.0-85098162607 | |
| Codice identificativo WOS: | WOS:000597807400007 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevA.102.063708 | |
| Handle: | http://hdl.handle.net/11572/282586 | |
| Citazione: | Bell inequality violation by entangled single-photon states generated from a laser, a LED or a Halogen lamp / Pasini, Matteo; Leone, Nicolo; Mazzucchi, Sonia; Moretti, Valter; Pastorello, Davide; Pavesi, Lorenzo. - In: PHYSICAL REVIEW A. - ISSN 2469-9926. - 102:6(2020), pp. 063708.1-063708.15. [10.1103/PhysRevA.102.063708] | |
| Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| AS12065 (1).pdf | Post-print referato (Refereed author’s manuscript) | Tutti i diritti riservati (All rights reserved) | Open Access Visualizza/Apri | |
| PhysRevA.102.063708.pdf | Versione editoriale (Publisher’s layout) | Tutti i diritti riservati (All rights reserved) | Open Access Visualizza/Apri |
http://hdl.handle.net/11572/282586
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