论文标题
可重新配置的电光频率变速杆
Reconfigurable electro-optic frequency shifter
论文作者
论文摘要
在这里，我们演示了一个芯片电磁频率变速杆，仅使用单色微波信号来精确控制。这是通过在超低损耗电波指导中的光学模式的状态密度和耦合之间的工程来实现的。我们的设备可提供高达28 GHz的频移，测得的移位效率约为99％，插入损失<0.5 dB。重要的是，可以将设备重新配置为可调频域束分离器，其中分裂比和分裂频率分别由微波功率和频率控制。使用该设备，我们还通过在两个不同的频率通道之间的有效交换信息（即交换操作）之间演示了（非阻滞）频率路由。最后，我们表明我们的方案可以缩放以实现超过100 GHz的级联频移。我们的设备可能成为未来高速和大规模古典信息处理器以及新兴频域光子量子计算机的必不可少的建筑块。
Here we demonstrate an on-chip electro-optic frequency shifter that is precisely controlled using only a single-tone microwave signal. This is accomplished by engineering the density of states of, and coupling between, optical modes in ultra-low loss electro-optic waveguides and resonators realized in lithium niobate nanophotonics. Our device provides frequency shifts as high as 28 GHz with measured shift efficiencies of ~99% and insertion loss of <0.5 dB. Importantly, the device can be reconfigured as a tunable frequency-domain beam splitter, in which the splitting ratio and splitting frequency are controlled by microwave power and frequency, respectively. Using the device, we also demonstrate (non-blocking) frequency routing through an efficient exchange of information between two distinct frequency channels, i.e. swap operation. Finally, we show that our scheme can be scaled to achieve cascaded frequency shifts beyond 100 GHz. Our device could become an essential building-block for future high-speed and large-scale classical information processors as well as emerging frequency-domain photonic quantum computers.
