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05-22
2026
Hybrid Optical Lattice-Tweezer Ytterbium Platform
时 间：16:30-18:00, May 22, 2026 (Fri)地 点：RM S327, MMW Building内容：Optical lattices and tweezers have led to a series of breakthroughs in quantum simulation and computing with cold atoms. However, optical lattices provide excellent scalability but limited local control, whereas optical tweezers allow flexible and precise manipulation of individual atoms but are limited in system size b...
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05-13
2026
钙离子光频标进展
时 间：16:00-17:15, May 13, 2026 (Wed)地 点：RM 1-222, FIT Building内容：冷原子物理和激光技术的发展推动了原子光频的精密谱的进展。由此得到更精确的物理常数，在更高精度检验基本物理规律；并导致新的物理机理的认识和发现。同时推动时间频率标准发展和应用。本报告介绍我们囚禁冷却钙离子光频标研究进展。解决单离子的稳定囚禁和有效冷却、超窄线宽激光研制和实验环境影响（含电、磁、振动、温度等）等关键问题， 2...
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05-12
2026
Space-Efficient Quantum Algorithm for Elliptic Curve Discrete Logarithms with Resource Estimation
时 间：10:30-12:00, May 12, 2026 (Tue)地 点：RM S327, MMW Building内容：Solving the Elliptic Curve Discrete Logarithm Problem (ECDLP) is critical for evaluating the quantum security of widely deployed elliptic-curve cryptosystems. Consequently, minimizing the number of logical qubits required to execute this algorithm is a key object. In implementations of Shor's algorithm, the space comple...
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05-07
2026
Exponential quantum advantage in processing massive classical data
时 间：10:00-11:30, May 8, 2026 (Fri)地 点： RM S527, MMW Building内容：Broadly applicable quantum advantage, particularly in classical data processing and machine learning, has been a fundamental open problem. In this work, we prove that a small quantum computer of polylogarithmic size can perform large-scale classification and dimension reduction on massive classical data by processing sa...
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04-27
2026
Beyond Bell: falsifying direct causation
时 间：14:00-15:00, Apr 27, 2026 (Mon)地 点： RM S327, MMW Building内容：According to Reichenbach's criterion, correlations may come through two structures: common cause, or direct causation. For the case of correlations obtained by measuring entangled systems, Bell famously excluded any explanation relying only on a common cause. A few years ago, we first intuited [1,2] and then finally pr...
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04-21
2026
2,400镱原子光镊阵列的高效率装载
时 间：13:00-15:00, Apr 21, 2026 (Tue)地 点：Seminar Room 2, 19th Floor, Tower C, TusPark内容：中性原子阵列已成为量子计算、量子模拟和量子精密测量的重要平台。其中，类碱土原子展现出长相干时间、高保真度量子门和擦除误差转化等独特优势，但其阵列规模长期落后于碱金属原子。我们在光镊阵列中成功俘获2400个镱-174原子，并实现了83.5(1)%的单原子增强装载效率，打破碱土金属原子光镊阵列规模纪录。我们进一步发现...