Electronic-photonic arithmetic logic unit for high-speed computing
Electronic-photonic arithmetic logic unit for high-speed computing
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DOI：
10.1038/s41467-020-16057-3
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发表时间：
2020-05
影响因子：
16.6
通讯作者：
Zhoufeng Ying;Chenghao Feng;Zheng Zhao;Shounak Dhar;Hamed Dalir;Jiaqi Gu;Yue Cheng;R. Soref;David Z. Pan;Ray T. Chen
中科院分区：
文献类型：
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作者：
Zhoufeng Ying;Chenghao Feng;Zheng Zhao;Shounak Dhar;Hamed Dalir;Jiaqi Gu;Yue Cheng;R. Soref;David Z. Pan;Ray T. Chen
在过去的二十年里，微处理器的时钟速度停滞不前，随着纳米制造技术接近其不可避免的物理极限，摩尔定律最近也开始摇摇晃晃。在这个后摩尔定律时代，各个研究领域都在大力开发节能和超快的计算机器。集成光子学以其在单个芯片上集成复杂电光电路的独特能力，彻底改变了互连，并在光学计算中显示出惊人的潜力。在这里，我们提出了一种基于波分复用的电子-光子算术逻辑单元的电子-光子计算架构，它解开了功率和时钟速率之间的指数关系，与最先进的基于晶体管的电路相比，提高了计算速度和功率效率。通过实现一个由8个高速微磁盘调制器组成、工作频率为20 GHz的4位算术逻辑单元，实验证明了其实用性。这种方法为未来的节能和高速电子-光子计算电路铺平了道路。
The past two decades have witnessed the stagnation of the clock speed of microprocessors followed by the recent faltering of Moore’s law as nanofabrication technology approaches its unavoidable physical limit. Vigorous efforts from various research areas have been made to develop power-efficient and ultrafast computing machines in this post-Moore’s law era. With its unique capacity to integrate complex electro-optic circuits on a single chip, integrated photonics has revolutionized the interconnects and has shown its striking potential in optical computing. Here, we propose an electronic-photonic computing architecture for a wavelength division multiplexing-based electronic-photonic arithmetic logic unit, which disentangles the exponential relationship between power and clock rate, leading to an enhancement in computation speed and power efficiency as compared to the state-of-the-art transistors-based circuits. We experimentally demonstrate its practicality by implementing a 4-bit arithmetic logic unit consisting of 8 high-speed microdisk modulators and operating at 20 GHz. This approach paves the way to future power-saving and high-speed electronic-photonic computing circuits.