About
I am Yanglin Hu, a Post-doctoral Fellow at the University of Hong Kong. Currently, I am working with Prof Yuxiang Yang. I obtained my PhD degree under the supervision of Prof Marco Tomamichel from Centre for Quantum Technologies, National University of Singapore. Before that, I received my Master's degree in Physics from ETH Zurich and my Bachelor's degree in Physics from Peking University.
Research
My research interest falls in quantum information theory, with a focus on quantum cryptography and learning theory.
Quantum Cryptography
Classical cryptographers seldom sleep well, as the assumptions they bet their career on may be broken when they wake up. On the contrary, quantum cryptographers can choose to build their carrer on laws of quantum physics. For example, the most well-known quantum cryptographic protocol with such information-theoretic security is quantum key distribution. Of course, there are many others. I am interested in such cryptographic tasks beyond quantum key distribution, including quantum weak coin flipping, quantum oblivious transfer and etc.
Learning theory
Learning theory studies how well and how efficiently a learner can learn properties of systems. It is much less explored to learn quantum systems than classical systems. I am especially interested in how to learn properties of quantum states and quantum channels and how to ultilize this process for physical purposes.
Publications
- Reinforcement learning for quantum processes with memory. Preprint, 2026. arXiv
- Learning to extract work optimally from unknown quantum states with exponentially reduced dissipation. Preprint, 2025. arXiv
- Consecutive measurement tradeoffs in quantum cryptography. Preprint, 2025. arXiv
- Sample-optimal and memory-efficient quantum state tomography. PRA, 2026. arXiv
- On the composable security of weak coin flipping. Quantum, 2025. arXiv
- Fundamental limits on quantum cloning from the no-signaling principle. PRA, 2024. arXiv
- Privacy and correctness trade-offs for information-theoretically secure quantum homomorphic encryption. Quantum, 2023. arXiv
Contact
Email: ylhu97 at hku.hk
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