Two-colour high-purity Einstein-Podolsky-Rosen photonic state.

Autor: Brasil TB; Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark. tulio.brasil@nbi.ku.dk., Novikov V; Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.; Russian Quantum Center, Skolkovo, Moscow, Russia., Kerdoncuff H; Danish Fundamental Metrology, Hørsholm, Denmark., Lassen M; Danish Fundamental Metrology, Hørsholm, Denmark., Polzik ES; Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark. polzik@nbi.ku.dk.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2022 Aug 16; Vol. 13 (1), pp. 4815. Date of Electronic Publication: 2022 Aug 16.
DOI: 10.1038/s41467-022-32495-7
Abstrakt: We report a high-purity Einstein-Podolsky-Rosen (EPR) state between light modes with the wavelengths separated by more than 200 nm. We demonstrate highly efficient EPR-steering between the modes with the product of conditional variances [Formula: see text]. The modes display - 7.7 ± 0.5 dB of two-mode squeezing and an overall state purity of 0.63 ± 0.16. EPR-steering is observed over five octaves of sideband frequencies from RF down to audio-band. The demonstrated combination of high state purity, strong quantum correlations, and extended frequency range enables new matter-light quantum protocols.
(© 2022. The Author(s).)
Databáze: MEDLINE
Externí odkaz: