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

Tulio Brito Brasil; Valeriy Novikov; Hugo Kerdoncuff; Mikael Lassen; Eugene S. Polzik

doi:10.1038/s41467-022-32495-7

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

Tulio Brito Brasil, Valeriy Novikov, Hugo Kerdoncuff, Mikael Lassen, Eugene S. Polzik

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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 epsilon(2) = 0.11 +/- 0.01 << 1. 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.

Original language	English
Article number	4815
Journal	Nature Communications
Volume	13
Issue number	1
Number of pages	5
ISSN	2041-1723
DOIs	https://doi.org/10.1038/s41467-022-32495-7
Publication status	Published - 16 Aug 2022

Keywords

QUANTUM
PARADOX
LIGHT

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10.1038/s41467-022-32495-7Licence: CC BY

s41467-022-32495-7Final published version, 712 KBLicence: CC BY

Cite this

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title = "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 epsilon(2) = 0.11 +/- 0.01 << 1. 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.",

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AU - Brasil, Tulio Brito

AU - Novikov, Valeriy

AU - Kerdoncuff, Hugo

AU - Lassen, Mikael

AU - Polzik, Eugene S.

PY - 2022/8/16

Y1 - 2022/8/16

N2 - 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 epsilon(2) = 0.11 +/- 0.01 << 1. 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.

AB - 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 epsilon(2) = 0.11 +/- 0.01 << 1. 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.

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