Generation of broadband correlated photon-pairs in short thin-film lithium-niobate waveguides.
Opt Express
; 27(26): 38521-38531, 2019 Dec 23.
Article
em En
| MEDLINE
| ID: mdl-31878617
ABSTRACT
An efficient source of quantum-correlated photon-pairs that is integrable with existing silicon-electronics fabrication techniques is desirable for use in quantum photonic integrated circuits. Here we demonstrate signal-idler photon pairs with high coincidence-to-accidental count ratios of over 103 on a coarse wavelength-division-multiplexing grid that spans 140 nm by using a 300-µm-long poled region in a thin-film periodically-poled lithium-niobate ridge waveguide bonded to silicon. The pairs are generated via spontaneous parametric downconversion pumped by a continuous-wave tunable laser source. The small mode area of the waveguide allows for efficient interaction in a short length of the waveguide and, as a result, permits photon-pair generation over a broad range of signal-idler wavelengths.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2019
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Article