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

ABSTRACT: 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.

SUBMITTER: Brasil TB

PROVIDER: S-EPMC9381510 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature

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

Brasil Tulio Brito TB Novikov Valeriy V Kerdoncuff Hugo H Lassen Mikael M Polzik Eugene S ES

Nature communications 20220816 1

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 purit ...[more]

PMID: 35974049

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