TY - JOUR
T1 - Photon Conversion and Interaction in a Quasi-Phase-Matched Microresonator
AU - Chen, Jia Yang
AU - Li, Zhan
AU - Ma, Zhaohui
AU - Tang, Chao
AU - Fan, Heng
AU - Sua, Yong Meng
AU - Huang, Yu Ping
N1 - Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/12
Y1 - 2021/12
N2 - The conversion and interaction between quantum signals at the single-photon level are essential for scalable quantum photonic information technology. Using a fully optimized periodically poled lithium niobate microring, we demonstrate ultraefficient sum-frequency generation on a chip. The external quantum efficiency reaches (65±3)% with only (104±4)-μW pump power. At peak conversion, 3×10-5-noise photon is created during the cavity lifetime, which meets the requirement of quantum applications using single-photon pulses. Using a pump and signal in single-photon coherent states, we directly measure the conversion probability produced by a single pump photon to be 10-5, which is a significant improvement from the state of the art, and the photon-photon coupling strength to be 9.1 MHz. Our results mark steady progress toward quantum nonlinear optics at the ultimate single-photon limit, with potential applications in highly integrated photonics and quantum optical computing.
AB - The conversion and interaction between quantum signals at the single-photon level are essential for scalable quantum photonic information technology. Using a fully optimized periodically poled lithium niobate microring, we demonstrate ultraefficient sum-frequency generation on a chip. The external quantum efficiency reaches (65±3)% with only (104±4)-μW pump power. At peak conversion, 3×10-5-noise photon is created during the cavity lifetime, which meets the requirement of quantum applications using single-photon pulses. Using a pump and signal in single-photon coherent states, we directly measure the conversion probability produced by a single pump photon to be 10-5, which is a significant improvement from the state of the art, and the photon-photon coupling strength to be 9.1 MHz. Our results mark steady progress toward quantum nonlinear optics at the ultimate single-photon limit, with potential applications in highly integrated photonics and quantum optical computing.
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U2 - 10.1103/PhysRevApplied.16.064004
DO - 10.1103/PhysRevApplied.16.064004
M3 - Article
AN - SCOPUS:85121641394
VL - 16
JO - Physical Review Applied
JF - Physical Review Applied
IS - 6
M1 - 064004
ER -