Correction of high speed ADCs********

模数转换器(ADC)是物理现实和数字世界之间的接口，而高速与高分辨率相结合的ADC是推动高速通信和高分辨率成像等领域进步的关键因素。它们也是新兴量子信息处理设备与经典电子学接口的关键。*然而，由于其复杂的设计，高速ADC通常会产生比其分辨率理论上允许的高出几个数量级的杂散信号。该项目的目标是在数字上去除杂散信号，以利用ADC的全分辨率，从而以尽可能高的保真度恢复输入信号。为了实现这一目标，我们将利用舍布鲁克大学量子研究所在使用高速高分辨率ADC进行量子测量方面的专业知识。在这些测量中，我们使用高速数值数据分析算法对ADC的输出信号进行处理，以从大量的噪声数据中提取量子关联。在这个项目中，我们将采用这些算法来提取ADC缺陷，而不是量子关联。*我们将与Alazar Technologies密切合作，后者在其数字转换器中使用高速ADC来转换模拟信号，并将其流传输到计算机内存或图形卡中，在那里可以对信号进行数字处理。这一多功能系统将使这一改进的ADC分辨率可用于许多应用。**********

Analog to digital converters (ADCs) are the interface between physical reality and the digital world and ADCs with very high speed combined with high resolution are a key ingredient driving progress in high-speed telecommunication and high-resolution imaging among may others. They are also essential for interfacing emerging quantum information processing devices with classical electronics.****However, high speed ADCs, due to their complex design, typically generate spurious signals several orders of magnitude stronger than their resolution would theoretically permit. The goal of this project is to remove spurious signals numerically to make use of the full resolution of the ADC and thereby recover the input signal with the highest possible fidelity. To reach this goal we will use expertise at Institut Quantique of Université de Sherbrooke on the use of high-speed high resolution ADCs for quantum measurements. In these measurements we use high-speed numerical data analysis algorithms on the output signal of ADCs to extract quantum correlations from large amounts of noisy data. In this project we will adapt these algorithms to extract ADC imperfections instead of quantum correlations. ****We will work in close collaboration with Alazar Technologies which uses high speed ADCs in their digitizers to convert analog signals and stream them into computer memory or onto a graphics card where the signals can be treated digitally. This versatile system will make this this improved ADC resolution available for many applications. **********