论文标题
通过$χ^{（2）} $在藻类波导中通过$χ^{（2）} $的光学参数放大器
An Optical Parametric Amplifier via $ χ^{(2)} $ in AlGaAs Waveguides
论文作者
论文摘要
我们通过在半导体Bragg反射波导（BRW）波导芯片中利用$χ^{（2）} $非线性来报告参数增益。在两种模式II型II相位匹配下，可以证明TE和TM模式的参数增益超过18 dbs在100毫米的设备长度中都是可替代的。极化不敏感的参数增益可以在光谱的1550 nm区域内实现。这些藻类BRW波导每个脉冲敏感性表现出亚光子。这与使用$χ^{（3）} $的其他类型的参数增益设备形成鲜明对比，其中泵波长位于信号波长的附近。达到0.1〜光子/脉冲的这种灵敏度可以使用紧凑的微米尺度设备来引入芯片量子信息处理的新时代。
We report parametric gain by utilizing $ χ^{(2)} $ non-linearities in a semiconductor Bragg Reflection Waveguide (BRW) waveguide chip. Under the two-mode degenerate type II phase matching, it can be shown that more than 18 dBs of parametric gain for both TE and TM modes is tenable in 100s of micrometers of device length. Polarization insensitive parametric gain can be attained within the 1550 nm region of the spectrum. These AlGaAs BRW waveguides exhibit sub-photon per pulse sensitivity. This is in sharp contrast to other types of parametric gain devices which utilize $ χ^{(3)} $, where the pump wavelength is in the vicinity of the signal wavelength. This sensitivity, which reached 0.1~photon/pulse, can usher a new era for on-chip quantum information processing using compact, micrometer-scale devices.
