Photon Conversion and Interaction on Chip
- URL: http://arxiv.org/abs/2105.00275v1
- Date: Sat, 1 May 2021 14:56:55 GMT
- Title: Photon Conversion and Interaction on Chip
- Authors: Jia-Yang Chen, Zhan Li, Zhaohui Ma, Chao Tang, Heng Fan, Yong Meng
Sua, and Yu-Ping Huang
- Abstract summary: We demonstrate ultra-efficient sum-frequency generation on chip.
The external quantum efficiency reaches $(65pm3)%$ with only $(104pm4)$ $mu$W pump power.
We directly measure the conversion probability produced by a single pump photon to be $10-5$ -- breaking the record by 100 times.
- Score: 10.809303792951997
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The conversion and interaction between quantum signals at a single-photon
level are essential for scalable quantum photonic information technology. Using
a fully-optimized, periodically-poled lithium niobate microring, we demonstrate
ultra-efficient sum-frequency generation on chip. The external quantum
efficiency reaches $(65\pm3)\%$ with only $(104\pm4)$ $\mu$W pump power,
improving the state-of-the-art by over one order of magnitude. At the peak
conversion, $3\times10^{-5}$ noise photon is created during the cavity
lifetime, which meets the requirement of quantum applications using
single-photon pulses. Using pump and signal in single-photon coherent states,
we directly measure the conversion probability produced by a single pump photon
to be $10^{-5}$ -- breaking the record by 100 times -- and the photon-photon
coupling strength to be 9.1 MHz. Our results mark a new milestone toward
quantum nonlinear optics at the ultimate single photon limit, creating new
background in highly integrated photonics and quantum optical computing.
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