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About the Author


Yien Liang, a PhD student now working in HHU.

About the Blog

This blog collects my thoughts on my research and study. 

The name of the blog comes from the lambda calculus .

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Your QKD System isn't Even Classical Secure: Exploiting Vulnerabilities in QKD Post-processing Software

This work is conducted by the author independently so far. The work so far is not requested, supported, supervised, or endorsed by any third party, nor by any of the departments or employees of any third party. This work does not represent the opinions of any third party, nor any of the departments or employees of any third party. This work is unrelated to the author's employment duties at any third party.   The author comes from the field of Physics and does not specialize in cybersecurity, if you find any inaccuracies, please contact the author for correction.  Classicality Overcomes Quantumness Quantum Key Distribution is often depicted as an unconditional secure solution of key exchange. While this claim is exactly true theoretically, it faces many problems in real implementation. To name a few: blinding attacks, detection efficiency mismatch attacks, photon-number-splitting attacks...  Germany's ministry of cybersecurity have published a technical reports listi...
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Why Does the History of Physics Matter?

(This article was first written by me and then polished by AI. The idea is completely mine.) As I am approaching graduation next year, I have recently been exploring a range of possible career paths. On a whim, I looked for research positions in the history of physics. To my disappointment—though perhaps not entirely to my surprise—I found relatively few opportunities. This got me thinking about a question that has interested me for some time: why does the history of physics seem to receive so little attention among physicists? I believe that it deserves much more. To begin with, the history of physics helps us understand how scientific ideas interact with the society in which they develop. For example, studying the influence of the Cold War on academic research may be especially relevant at a time when science and geopolitics are once again closely intertwined. It also helps us appreciate the achievements of past scientists on their own terms. I once heard a remark along the lines ...
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