Efficient Cryogenic Nonlinear Conversion Processes in Periodically-Poled Thin-Film Lithium Niobate Waveguides

Yujie Cheng; Xiaoting Li; Lantian Feng; Haochuan Li; Wenzhao Sun; Xinyu Song; Yuyang Ding; Guangcan Guo; Cheng Wang; Xifeng Ren

doi:10.1002/lpor.202401491

Efficient Cryogenic Nonlinear Conversion Processes in Periodically-Poled Thin-Film Lithium Niobate Waveguides

Yujie Cheng (Co-first Author), Xiaoting Li (Co-first Author), Lantian Feng^*, Haochuan Li, Wenzhao Sun, Xinyu Song, Yuyang Ding, Guangcan Guo, Cheng Wang^*, Xifeng Ren^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

10 Citations (Scopus)

Abstract

Periodically poled thin-film lithium niobate (TFLN) waveguides, which enable efficient quadratic nonlinear processes, serve as crucial foundation for classical and quantum signal processing. To expand their application scope, the first investigation of nonlinear conversion processes in periodically poled TFLN waveguides at cryogenic conditions (7 K) is provided. Through systematic experimental characterization, it is found that the periodically poled TFLN waveguide retains its high conversion efficiency at both cryogenic and room temperatures for both classical second-harmonic generation and quantum photon-pair generation processes. Particularly, the photon-pair source at cryogenic conditions shows high brightness (≈8 MHz µW⁻¹) and broad bandwidth (>100 THz). These results demonstrate the significant potential of TFLN wavelength conversion devices for cryogenic applications and foster future scalable quantum photonic systems. © 2024 Wiley-VCH GmbH.

Original language	English
Article number	2401491
Journal	Laser & Photonics Reviews
Volume	19
Issue number	5
Online published	30 Nov 2024
DOIs	https://doi.org/10.1002/lpor.202401491
Publication status	Published - 4 Mar 2025

Funding

This work was supported by National Key Research and Development Program of China (2022YFA1204704), the National Science Foundation of China (NSFC) (62061160487, 62275240, T2325022, U23A2074, 62321166651), the CAS Project for Young Scientists in Basic Research (No.253 YSBR-049), Key Research and Development Program of Anhui Province (2022b1302007), Innovation Program for Quantum Science and Technology (No. 2021ZD0301500), the Fundamental Research Funds for the Central Universities, and the Research Grants Council, University Grants Committee (N_CityU113/20).

Research Keywords

cryogenic
nonlinear conversion processes
photon-pair source
thin-film lithium niobate waveguides

RGC Funding Information

RGC-funded

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10.1002/lpor.202401491

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title = "Efficient Cryogenic Nonlinear Conversion Processes in Periodically-Poled Thin-Film Lithium Niobate Waveguides",

abstract = "Periodically poled thin-film lithium niobate (TFLN) waveguides, which enable efficient quadratic nonlinear processes, serve as crucial foundation for classical and quantum signal processing. To expand their application scope, the first investigation of nonlinear conversion processes in periodically poled TFLN waveguides at cryogenic conditions (7 K) is provided. Through systematic experimental characterization, it is found that the periodically poled TFLN waveguide retains its high conversion efficiency at both cryogenic and room temperatures for both classical second-harmonic generation and quantum photon-pair generation processes. Particularly, the photon-pair source at cryogenic conditions shows high brightness (≈8 MHz µW−1) and broad bandwidth (>100 THz). These results demonstrate the significant potential of TFLN wavelength conversion devices for cryogenic applications and foster future scalable quantum photonic systems. {\textcopyright} 2024 Wiley-VCH GmbH.",

keywords = "cryogenic, nonlinear conversion processes, photon-pair source, thin-film lithium niobate waveguides",

author = "Yujie Cheng and Xiaoting Li and Lantian Feng and Haochuan Li and Wenzhao Sun and Xinyu Song and Yuyang Ding and Guangcan Guo and Cheng Wang and Xifeng Ren",

year = "2025",

month = mar,

day = "4",

doi = "10.1002/lpor.202401491",

language = "English",

volume = "19",

journal = "Laser & Photonics Reviews",

issn = "1863-8880",

publisher = "Wiley-VCH Verlag GmbH",

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Efficient Cryogenic Nonlinear Conversion Processes in Periodically-Poled Thin-Film Lithium Niobate Waveguides. / Cheng, Yujie (Co-first Author); Li, Xiaoting (Co-first Author); Feng, Lantian et al.
In: Laser & Photonics Reviews, Vol. 19, No. 5, 2401491, 04.03.2025.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Efficient Cryogenic Nonlinear Conversion Processes in Periodically-Poled Thin-Film Lithium Niobate Waveguides

AU - Cheng, Yujie

AU - Li, Xiaoting

AU - Feng, Lantian

AU - Li, Haochuan

AU - Sun, Wenzhao

AU - Song, Xinyu

AU - Ding, Yuyang

AU - Guo, Guangcan

AU - Wang, Cheng

AU - Ren, Xifeng

PY - 2025/3/4

Y1 - 2025/3/4

N2 - Periodically poled thin-film lithium niobate (TFLN) waveguides, which enable efficient quadratic nonlinear processes, serve as crucial foundation for classical and quantum signal processing. To expand their application scope, the first investigation of nonlinear conversion processes in periodically poled TFLN waveguides at cryogenic conditions (7 K) is provided. Through systematic experimental characterization, it is found that the periodically poled TFLN waveguide retains its high conversion efficiency at both cryogenic and room temperatures for both classical second-harmonic generation and quantum photon-pair generation processes. Particularly, the photon-pair source at cryogenic conditions shows high brightness (≈8 MHz µW−1) and broad bandwidth (>100 THz). These results demonstrate the significant potential of TFLN wavelength conversion devices for cryogenic applications and foster future scalable quantum photonic systems. © 2024 Wiley-VCH GmbH.

AB - Periodically poled thin-film lithium niobate (TFLN) waveguides, which enable efficient quadratic nonlinear processes, serve as crucial foundation for classical and quantum signal processing. To expand their application scope, the first investigation of nonlinear conversion processes in periodically poled TFLN waveguides at cryogenic conditions (7 K) is provided. Through systematic experimental characterization, it is found that the periodically poled TFLN waveguide retains its high conversion efficiency at both cryogenic and room temperatures for both classical second-harmonic generation and quantum photon-pair generation processes. Particularly, the photon-pair source at cryogenic conditions shows high brightness (≈8 MHz µW−1) and broad bandwidth (>100 THz). These results demonstrate the significant potential of TFLN wavelength conversion devices for cryogenic applications and foster future scalable quantum photonic systems. © 2024 Wiley-VCH GmbH.

KW - cryogenic

KW - nonlinear conversion processes

KW - photon-pair source

KW - thin-film lithium niobate waveguides

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Efficient Cryogenic Nonlinear Conversion Processes in Periodically-Poled Thin-Film Lithium Niobate Waveguides

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NSFC: Frequency-encoded Lithium Niobate Quantum Photonic Integrated Circuit

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Efficient Cryogenic Nonlinear Conversion Processes in Periodically-Poled Thin-Film Lithium Niobate Waveguides

Abstract

Funding

Research Keywords

RGC Funding Information

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Projects

NSFC: Frequency-encoded Lithium Niobate Quantum Photonic Integrated Circuit

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