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01-08
2025
Quantum computation on qLDPC codes
内容： Quantum error correction is a key approach to achieve large-scale quantum computing. Due to the low encoding rate of surface codes, fault-tolerant quantum computing schemes based on surface cod...
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10-09
2024
A Cryptographic Perspective on the Verifiability of Quantum Advantage
内容： In recent years, achieving verifiable quantum advantage on a NISQ device has emerged as an important open problem in quantum information. The sampling-based quantum advantages are not known to ...
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10-18
2024
Symmetry-breaking-enhanced quantum advantage in quantum information systems
内容： We study symmetry-breaking (SB) phenomena in a few quantum information systems, it is shown that SB can create or enhance quantum advantage on quantum information processing. We find that excha...
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10-11
2024
Spin glass, quantum gravity, and their simulations
内容： In this introductory seminar, I will briefly explain the mean-field spin glass, especially focusing on the classical Sherrington-Kirkpatrick (SK) model. I will explain its nontrivial low temper...
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06-17
2024
Tensor network simulation in strongly correlated systems: past, present and future
内容： Tensor network states are new kinds of variational wavefunctions that help us to understand quantum phases and phase transitions beyond Landau paradigm. In this talk, I will first review the ma...
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05-08
2024
Quantum applications based on density matrix vectorization: a polynomial-time quantum algorithm for some hard ground state problems and an unconditionally decoherence-free quantum error mitigation method
内容： In this talk, we will give two quantum applications based on density matrix vectorization. Vectorizing density matrices has been a useful mathematical trick for simplifying many concepts in qua...