论文标题
芯片上的超光亮量子光子源
Ultra-bright Quantum Photon Sources on Chip
论文作者
论文摘要
高速，亮度和纯度的量子光子源随着量子信息系统的迅速扩展并应用于许多字段而越来越多。我们使用芯片上定期使用的尼橙色锂微孔子硅硅酸锂，仅使用3.4- $ $ $ W和13.4- $ $ $ W泵浦功率以高速度为8.5 MHz和36.3 MHz的光子对生成，标志着比整个阶层的数量级提高。以较低的泵功率，所测量的巧合与意外比率远高于100，并达到14,682 \ pm 4427 $。相同的芯片可以以数十兆赫的速率征兆单光量生成，每个芯片的自动相关$ g^{（2）} _ {h}（0）= 0.008 $和0.097 $，Microwatt Pumps的$ 0.008 $。这种独特的性能是由芯片设备的无声和巨大的光学非线性促进的，将有助于即将到来的量子光学信息技术的普遍采用。
Quantum photon sources of high rate, brightness, and purity are increasingly desirable as quantum information systems are quickly scaled up and applied to many fields. Using a periodically poled lithium niobate microresonator on chip, we demonstrate photon-pair generation at high rates of 8.5 MHz and 36.3 MHz using only 3.4-$μ$W and 13.4-$μ$W pump power, respectively, marking orders of magnitude improvement over the state-of-the-art. The measured coincidence to accidental ratio is well above 100 at those high rates and reaches $14,682\pm 4427$ at a lower pump power. The same chip enables heralded single-photon generation at tens of megahertz rates, each with low auto-correlation $g^{(2)}_{H}(0)=0.008$ and $0.097$ for the microwatt pumps. Such distinct performance, facilitated by the chip device's noiseless and giant optical nonlinearity, will contribute to the forthcoming pervasive adoption of quantum optical information technologies.
