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start [2023/11/20 10:57] oreshkov |
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| Recently, it also has contributed to establish the fundamental limit on the transmission rate via Gaussian bosonic channels (the quantum extension of Shannon's famous channel capacity formula), and has discovered a quantum two-photon interference effect in the amplification of light akin to the Hong-Ou-Mandel effect. | Recently, it also has contributed to establish the fundamental limit on the transmission rate via Gaussian bosonic channels (the quantum extension of Shannon's famous channel capacity formula), and has discovered a quantum two-photon interference effect in the amplification of light akin to the Hong-Ou-Mandel effect. | ||
| - | It currently holds two patents, and has published numerous scientific papers, among which two in the journal //Nature//, one in //Nature Physics//, two in //Nature Photonics//, and two in //Nature Communications//. | + | It currently holds two patents, and has published numerous scientific papers, among which two in the journal //Nature//, one in //Nature Physics//, two in //Nature Photonics//, and three in //Nature Communications//. |
| //Nicolas J. Cerf, group leader.// | //Nicolas J. Cerf, group leader.// | ||
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| <box w=99% nodash|**Time-delocalised variables violating causal inequalities** (Nature Communications, March 2023)> | <box w=99% nodash|**Time-delocalised variables violating causal inequalities** (Nature Communications, March 2023)> | ||
| - | <box left w=125px noborder> {{:time-delocalised.jpg?130|}} | + | <box left w=125px noborder> {{:time-delocalised.jpg?150|}} |
| </box> | </box> | ||
| <box right w=80% noborder> | <box right w=80% noborder> | ||
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| \\ | \\ | ||
| See [[https://actus.ulb.be/fr/presse/communiques-de-presse/recherche/des-variables-delocalisees-dans-le-temps-allant-a-lencontre-des-inegalites-causales|press release]]. | See [[https://actus.ulb.be/fr/presse/communiques-de-presse/recherche/des-variables-delocalisees-dans-le-temps-allant-a-lencontre-des-inegalites-causales|press release]]. | ||
| + | </box> | ||
| + | </box> | ||
| + | |||
| + | |||
| + | <box w=99% nodash|**Cyclic quantum causal models** (Nature Communications, February 2021)> | ||
| + | |||
| + | <box left w=125px noborder> {{:causalloops.jpg?160|}} | ||
| + | </box> | ||
| + | <box right w=80% noborder> | ||
| + | Now researchers from the University of Oxford and the Université libre de Bruxelles have developed a theory of causality in quantum theory, according to which cause-effect relations can sometimes form cycles. This theory offers a novel understanding of exotic processes in which events do not have a definite causal order. The study has been published in [[https://www.nature.com/articles/s41467-020-20456-x|Nature Communications]]. | ||
| + | \\ | ||
| + | See [[https://www.eurekalert.org/news-releases/783860|press release]]. | ||
| </box> | </box> | ||
| </box> | </box> | ||