https://haifei-home.pages.dev/en/tags/tdc/Recent content in TDC on Haifei's HomeHugoenhfwang132@gmail.com (hfwang132)hfwang132@gmail.com (hfwang132)This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.Sun, 02 Nov 2025 12:53:03 +0800https://haifei-home.pages.dev/en/post_20251102_%E9%AB%98%E7%B2%BE%E5%BA%A6%E6%97%B6%E9%97%B4%E6%B5%8B%E9%87%8F-tdc-time-tagger-%E5%8E%9F%E7%90%86%E5%92%8C%E7%BB%93%E6%9E%84%E5%88%86%E6%9E%90/Sun, 02 Nov 2025 12:53:03 +0800hfwang132@gmail.com (hfwang132)https://haifei-home.pages.dev/en/post_20251102_%E9%AB%98%E7%B2%BE%E5%BA%A6%E6%97%B6%E9%97%B4%E6%B5%8B%E9%87%8F-tdc-time-tagger-%E5%8E%9F%E7%90%86%E5%92%8C%E7%BB%93%E6%9E%84%E5%88%86%E6%9E%90/<h2 id="1-what-is-a-tdc--time-tagger">1. What Is a TDC / Time Tagger?</h2> <p>A Time-to-Digital Converter (TDC) is essentially an extremely precise timer (at the picosecond level) that assigns a high-precision timestamp (Timestamp) to every input pulse signal.</p> <p>Therefore, a TDC is also called a Time Tagger, where “Tag” means assigning a timestamp.</p> <p>TDCs / Time Taggers are central to experiments such as Hong-Ou-Mandel interference and fluorescence lifetime measurements; it can be said that quantum optics experiments can hardly do without them.</p>