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10-09
2026
High-rate qLDPC processors
时 间：11:00-12:00, Oct 9, 2026 (Fri)地 点：RM S527, MMW Building or Venue: https://caltech.zoom.us/j/87834027070 (password: BB1984)内容：Despite significant progress on quantum low-density parity-check (qLDPC) codes, building qLDPC processors that are high-rate, high-throughput, hardware-friendly, and fast-to-decode remains a challenge. In this work, we introduce mitten codes, a family of ...
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09-24
2026
Quantum Computing and Quantum Advantage
时 间：11:00-12:00, Sep 24, 2026 (Thu)地 点：RM 1-202, FIT Building内容：Quantum computers have the potential to solve problems that are intractable for classical computers. However, building a universal, fault-tolerant quantum computer remains a significant technological challenge. Before fully fledged quantum computers become available, a more immediate question is what can be achieved wi...
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09-16
2026
Towards a Doubly Efficient IP = PSPACE
时 间：16:00-17:00, Sep 16, 2026 (Wed)地 点：RM 1-222, FIT Building内容：We show that every language in PSPACE that is decidable by a Turing machine in time T(n)=n^{O(log n)} admits a doubly efficient interactive proof system: the prover runs in time polynomial in T(n), and the verifier runs in time polynomial in n. This extends the best previously known regime for such proof systems from T...
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09-16
2026
BitGC: Garbled Circuits with 1 Bit per Gate
时 间：10:00-11:00, Sep 14, 2026 (Mon)地 点：RM 1-222, FIT Building内容：This talk introduces BitGC, a computationally efficient construction for rate-one garbling based on Ring-LWE with key-dependent-message security. The garbling consists of an SWHE-encrypted seed and one bit of stitching information per gate. Its computation requires homomorphically expanding the seed using a low-depth P...
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09-14
2026
Designing AI Infrastructure as an Integrated Whole
时 间：10:00-11:00, Sep 14, 2026 (Mon)地 点：https://meeting.tencent.com/dm/kMlAAN2VkyZ8 #腾讯会议：554-221-000内容：Modern AI infrastructure combines specialized training runtimes, GPU kernels, and communication libraries. Optimizing these components individually, however, does not necessarily meet end-to-end requirements for performance and reliability. My research examines these requirem...
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09-09
2026
State retrieval beyond Bayes’ retrodiction and reverse processes
时 间：15:00-17:00, Sep 9, 2026 (Wed)地 点：MMW-727会议室 (腾讯会议： 422-776-136)内容：In the context of irreversible dynamics, the meaning of the reverse of a physical evolution can be quite ambiguous. It is a standard choice to define the reverse process using Bayes' theorem, but, in general, this is not optimal with respect to the relative entropy of recovery. In this work we explore wh...