Journal Article

FZJ-2022-01721

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Two-Colour Spectrally Multimode Integrated SU(1,1) Interferometer

Sharapova, P. R.Extern* ; Ferreri, A. (Corresponding author)FZJ*

2022
MDPI Basel

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Please use a persistent id in citations: http://hdl.handle.net/2128/32280  doi:10.3390/sym14030552

Abstract: Multimode integrated interferometers have great potential for both spectral engineering and metrological applications. However, the material dispersion of integrated platforms constitutes an obstacle that limits the performance and precision of such interferometers. At the same time, two-colour nonlinear interferometers present an important tool for metrological applications, when measurements in a certain frequency range are difficult. In this manuscript, we theoretically developed and investigated an integrated multimode two-colour SU(1,1) interferometer operating in a supersensitive mode. By ensuring the proper design of the integrated platform, we suppressed the dispersion, thereby significantly increasing the visibility of the interference pattern. The use of a continuous wave pump laser provided the symmetry between the spectral shapes of the signal and idler photons concerning half the pump frequency, despite different photon colours. We demonstrate that such an interferometer overcomes the classical phase sensitivity limit for wide parametric gain ranges, when up to 3×104 photons are generated.

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Contributing Institute(s):

1. Quantum Computing Analytics (PGI-12)

Research Program(s):

1. 5214 - Quantum State Preparation and Control (POF4-521) (POF4-521)

Appears in the scientific report 2022

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