搜索结果: 61-75 共查到“理论物理学”相关记录305条 . 查询时间(3.02 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：The Minkowski problem in Gaussian probability space
高斯概率空间 闵可夫斯基问题 广义相对论
<
2023/5/6
The classical Minkowski problem, which asks for the characterization of surface area measure in Euclidean space with Lebesgue measure, largely motivated the development of elliptic PDEs throughout the...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Error Exponents and Rényi Information Divergence in Quantum Information
量子信息 误差指数 仁义信息发散
<
2023/4/28
In quantum information theory, the error exponents characterize the best rate of exponential convergence of the error towards 0 or 1, as the number of copies of the underlying resources increases. In ...
中国科学院物理研究所等在量子计算研究中实现随机混态的纠缠相变观测（图）
量子计算 随机混态 纠缠相变观测
<
2023/4/21
随机量子态指的是在整个希尔伯特空间中均匀分布的量子态，由于希尔伯特空间的维数随着比特数指数增长，在实验上制备和观测多比特的随机量子态是较为困难。同时，随机态在黑洞物理等领域备受关注。有一些理论工作预测，将随机态划分为系统和环境两部分后，改变环境和系统的相对大小，系统内会出现纠缠相变。然而，这种纠缠相变需要用到纠缠负度（negativity） 来刻画，而对多比特纠缠系统，这一实验测量颇为困难。同时考...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Improved error estimates of the splitting methods for the long-time dynamics for the weakly nonlinear Schrodinger equations
弱非线性薛定谔方程 长时间动力学 分裂方法 误差估计
<
2023/4/21
We establish improved uniform error bounds for the time-splitting methods for the long-time dynamics of the nonlinear Schr\"odinger equation (NLSE) with weak nonlinearity. By a new technique of regula...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Dynamics of multi-solitons to Klein-Gordon equations
多孤子 克莱因-戈登方程 动力学
<
2023/4/21
I will report my recent joint work with Jacek Jendrej on muti-solitons to the Klein-Gordon equations including their asymptotic stability and classification.
量子计算实现随机混态的纠缠相变观测（图）
量子计算 随机混态 纠缠相变观测
<
2023/4/24
随机量子态指的是在整个希尔伯特空间中均匀分布的量子态，由于希尔伯特空间的维数随着比特数指数增长，在实验上制备和观测多比特的随机量子态是十分困难的，谷歌团队就是利用随机量子态的制备和采样这一经典计算困难的问题来实现量子霸权的。同时，随机态在黑洞物理等领域内也引起了广泛兴趣。最近有一些理论工作预测，将随机态划分为系统和环境两部分后，改变环境和系统的相对大小，系统内会出现纠缠相变。但是这种纠缠相变需要用...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Quantum Error Correction: Foundation and Landscape
量子纠错 基础景观 量子纠错理论
<
2023/4/18
Quantum error correction theory lies at the heart of universal quantum computing. So far, people do not find or realize good-enough error correction codes yet. In this talk, I will survey the foundati...
美国实现量子纠错新突破
美国 量子纠错 量子比特
<
2024/1/17
美国耶鲁大学科学家使用量子纠错技术将量子比特的寿命延长了一倍以上，经过纠错后的量子比特存活时间为1.8毫秒。该研究发表在《自然》（Nature）杂志上，证明了量子纠错的可行性。
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：From curve counting on Calabi-Yau 4-folds to quasimaps for quivers with potentials
Calabi-Yau 曲线计数 4-folds
<
2023/4/23
I will start by reviewing an old joint work with Davesh Maulik and Yukinobu Toda on relating Gromov-Witten, Gopakumar-Vafa and stable pair invariants on compact Calabi-Yau 4-folds. For non-compact CY4...
中国科学院高能物理研究所专利：一种用于屏蔽强磁场的多层复合结构的磁屏蔽装置
中国科学院高能物理研究所专利：一种利用超导高梯度磁场的转炉浊环水处理方法
中国科学院物理研究所专利：量子阱结构、发光二极管外延结构及发光二极管
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：A novel and faster quantum-inspired algorithm for solving linear systems
线性系统 新颖 量子衍生算法
<
2023/4/17
In this talk, we introduce a modified classical algorithm to solve linear systems in a model that resembles the QRAM used by quantum linear solvers. Specifically, we demonstrate that for the linear sy...