基于事件计时器的量子时间同步双向控制软著

在进行实地的双向量子时间同步实验时，需要两个事件计时器（ET）同时开始采集数据，才能实现双光子的有效符合测量，但是两地距离较远，通过手动控制同时采集是比较困难且浪费人力。基于事件计时器的现有数据采集系统只能实现一台电脑的客户端软件对一台本地ET进行单次采集，为了实现对两台ET进行同步控制，我们在现有基础上开发了本软件，通过一台电脑同时向近端与远端的ET循环发送采集指令，并将近端与远端的数据都自动保存在近端的电脑中，从而实现了对事件计时器数据的同步采集与存储。本软件主要基于TCP/IP通讯协议来发布指令，首先进行一些采集的初始化操作，建立会话，校准ET设备，同步本地ET与客户端，更新ET测量的设置参数，然后同时发送指令给近端与远端的ET，让ET开始采集数据，当两边采集到达设定的数量后停止采集，并自动保存数据，远端的数据通过网络传输到近端保存，保存完毕后开始下一次采集，直到采集的数据组数到达设定的数据组数，停止程序。

When conducting field bidirectional quantum time synchronization experiments, two event timers (ETs) must start data acquisition simultaneously to enable effective biphoton coincidence measurement. However, given the long distance between the two experimental sites, manual simultaneous control of data acquisition is not only difficult but also labor-intensive. The existing data acquisition system based on event timers only supports the client software on a single computer to perform one-time acquisition on a single local ET. To achieve synchronous control of two ETs, we developed this software based on the original system architecture. This software uses a single computer to cyclically send acquisition commands to both near-end and far-end ETs simultaneously, and automatically saves data from both ends to the near-end computer, thereby realizing synchronous acquisition and storage of event timer data. The software primarily issues commands via the TCP/IP communication protocol. It first performs acquisition initialization operations, establishes sessions, calibrates the ET devices, synchronizes the local ET with the client, and updates the measurement parameter settings of the ETs. It then simultaneously sends commands to the near-end and far-end ETs to start data acquisition. Once the acquisition count on both sides reaches the preset threshold, the acquisition stops and the data is automatically saved. Data from the far-end is transmitted to the near-end via the network for storage, and the next acquisition cycle starts immediately after saving is completed. This loop repeats until the total number of acquired data sets reaches the preset value, at which point the program terminates.