搜索结果: 31-45 共查到“会议中心 理论物理学”相关记录311条 . 查询时间(0.391 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Random Surface, Planar Lattice Model, and Conformal Field Theory
随机曲面 平面晶格模型 共形场论
2023/4/13
Liouville quantum gravity (LQG) is a theory of random surfaces that originated from string theory. Schramm Loewner evolution (SLE) is a family of random planar curves describing scaling limits of many...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Quantum State and Gate Verification with Minimum Settings
最小设置 量子态 门验证
2023/4/14
Efficient verification of quantum states and gates is crucial to the development of quantum technologies. Although the sample complexities of quantum state verification and quantum gate verification h...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Quantum Inequalities and Their Extremisers
量子不等式 极端值 量子对称性
2023/4/14
In this talk, we shall present a series of inequalities for quantum symmetries such as Hausdorff-Young inequalities, Young's inequalities, uncertainty principles, sumset estimation and entropic inequa...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：一个和量子输运相关的双正交系综
量子输运 双正交系综综 一维量子输运
2023/4/14
我们讨论一个特殊双正交（biorthogonal）系综的整体和局部极限行为。这个双正交系综源自对一维量子输运问题的研究，对应一维量子输运的Dorokhov-Mello-Pereyra-Kummar（DMPK）方程的diffusive regime 的近似解。我们从Riemann-Hilbert 问题的角度考虑这个双正交系综。
量子态的层析是量子信息里面的一个重要和热点问题. 这个报告介绍量子态层析在各种测量模型下需要的资源数目，包括 (1) 任意测量；(2) 独立测量；(3) 泡利测量. 还报告重叠量子态的层析问题及紧的界。
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Quantum Error Correction: Fault-tolerance and Universality
量子纠错 容错性 通用性
2023/4/17
There is a big gap between the so-called NISQ (noisy intermediate-scale quantum) and FTQ (fault-tolerant quantum) computing. Recently, we introduced QEQ (quasi-exact quantum) computing, which lies in ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Nonrelativistic limit of the Klein-Gordon equations: convergence rates and long time approximations
克莱因-戈登方程 非相对论极限 收敛率 长时间近似
2023/4/18
We study the nonrelativistic limit of the cubic Klein-Gordon equations. We show the cubic Klein-Gordon equation converges to the cubic Schr\"odinger equation with a convergence rate of order $\epsilon...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Approximation Distillation of Quantum Coherence
量子相干性 近似蒸馏 相干资源理论
2023/4/18
Coherence distillation is a basic information-theoretic task in the resource theory of coherence. In this talk, I will report the framework of the approximate coherence distillation under strictly inc...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：最优量子精密测量
量子精密测量 量子纠缠 传感器精度
2023/4/18
量子精密测量是利用量子纠缠、相干等资源设计更精确参数测量方案的科学。量子精密测量可以使传感器精度超越传统极限，在引力波探测、原子钟校准、空间定位等一系列任务上取得突破，并为量子计算中的校准和噪声估计提供支持。为了在近期(10年内)量子设备上实现最优精密测量，需要一系列理论基础的支持。在报告中，将介绍我们在最优量子精密测量方向的最新成果：关于如何在量子技术有限制的情形下，确定量子精密测量任务的最大精...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Instanton Floer homology and Heegaard diagrams
瞬子 弗洛尔同调和 希加德图
2023/4/21
Instanton Floer homology was introduced by Floer in 1980s and has become a power invariants for three manifolds and knots since then. It has lead to many milestone results, such as the approval of Pro...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：The Quantum Perron-Frobenius Theorem
量子力学 Perron-Frobenius Theorem 量子对称性
2023/4/23
We establish the quantum Perron-Frobenius theorem on quantum symmtries. We characterize the structure of the Perron-Frobenius eigenvector space using quantum Fourier analysis (in the sense of picture ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：量子算法及相关研究介绍
量子算法 量子纠缠 量子测不准关系
2023/4/23
我们介绍近期在量子算法、量子纠缠及其物理实现、斜信息及量子测不准关系方面的有关研究工作。
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Many-body localization and quantum many-body scars: The strong and weak form of ergodicity breaking
多体定位 量子多体疤痕 遍历性断裂 强弱形式
2023/4/23
The fate of an isolated quantum many-body system has attracted much attention in the past decade. One of the most important issues is whether such a system can reach thermalization under its own dynam...
“理论物理中的广义对称性”系列讲座成功举办（图）
理论物理 广义对称性 陈斌 王晴睿
2023/6/19
2023年2月13日-16日，由北京大学高能物理研究中心主办的“理论物理中的广义对称性（Generalized Symmetries in Theoretical Physics）“系列讲座成功举办。
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Dispersion Analysis of CIP–FEM for Helmholtz Equation
亥姆霍兹方程 CIP-FEM 色散分析
2023/4/24
When solving the Helmholtz equation numerically, the accuracy of numerical solution deteriorates as the wave number k increases, known as `pollution effect' which is directly related to the phase diff...