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06-12
2026
Ion-ion entanglement over a 50-km long fibre channel with a compact cavity-coupled quantum network node
时 间：10:30-12:00, Jun 12, 2026 (Fri)地 点：RM S327, MMW Building内容：Quantum networks promise transformative applications in secure communication, distributed quantum computing, sensing, and precision timekeeping. Realising real-world metropolitan-scale quantum networks requires compact, deployable systems capable of distributing entanglement over long distances beyond laboratory conditi...
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06-12
2026
Programmable Quantum Simulator based on Two-Dimensional Trapped Ion Crystals
时 间：09:30-10:30, Jun 12, 2026 (Fri)地 点：RM S327, MMW Building内容：Trapped ions are a versatile platform for quantum simulation of spin models due to their good coherence properties, the possibility to induce variable-range spin-spin interactions as well as the ease of site-resolved single-particle control and readout. We make use of a modified design of a linear Paul trap, which allow...
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06-11
2026
Reconfigurable Dissipative Entanglement between Many Spin Ensembles: From Robust Quantum Sensing to Many-Body State Engineering （Online talk）
时 间：10:30-11:30, Jun 11, 2026 (Thu)地 点：线上报告 (腾讯会议：963-955-107)内容：An attractive approach for stabilizing entangled many-body spin states is to employ engineered dissipation. Most existing proposals either target relatively simple collective spin states or require numerous independent and complex dissipative processes. Here, we show a surprisingly versatile scheme [1] for ma...
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06-10
2026
Exponential Speed-ups for Structured Goemans-Williamson relaxations via Quantum Gibbs States and Pauli Sparsity
时 间：10:00-12:00, Jun 10, 2026 (Wed)地 点：RM S327, MMW Building内容：Quadratic Unconstrained Binary Optimization (QUBO) problems are prevalent in various applications and are known to be NP-hard. The seminal work of Goemans and Williamson introduced a semidefinite programming (SDP) relaxation for such problems, solvable in polynomial time that upper bounds the optimal value. Their approa...
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06-03
2026
高质量窄线宽脉冲激光光源研发进展
时 间：14:30-15:30, Jun 3, 2026 (Wed)地 点：RM S327, MMW Building内容：全固态单频激光器，具有其高光束质量、低噪声以及高相干性等优点，在原子物理、精密测量、光刻技术、激光雷达以及激光制导等基础研究、工业制造和国防军事等领域中有广泛重要应用。随着科学技术的飞速发展，现有激光器已无法满足量子光学、深空探测和半导体光刻等新兴科学和技术发展需求。课题组根据国家需求和科技前沿发展方向，提出了利用非线性...
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05-27
2026
Gates and Observable Estimation in Early Fault-Tolerant Quantum Computing
时 间：10:00-11:30, May 27, 2026 (Wed)地 点：RM S327, MMW Building内容：Recent experimental advances in quantum error correction have pushed the field beyond the break-even point, offering a credible path toward early fault-tolerant quantum computing (FTQC) with logical qubits. In this emerging regime, two challenges become central: low-cost implementation of non-Clifford logical gates and ...