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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
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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
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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：Quantum Error Correction: Fault-tolerance and Universality
量子纠错 容错性 通用性
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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：Equivalence Checking of Quantum Circuits by Nonlocality
量子电路 非局域 等价性检验
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2023/4/17
Suppose two quantum circuit chips are located at different places, for which we do not have any prior knowledge, and cannot see the internal structures either. In such a situation, a realistic and fun...
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
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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：The Quantum Perron-Frobenius Theorem
量子力学 Perron-Frobenius Theorem 量子对称性
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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：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
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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...
A certain amount of noise is inherent in any quantum system. For instance, when researchers want to read information from a quantum computer, which harnesses quantum mechanical phenomena to solve cert...
Can you trust your quantum simulator?（图）
量子模拟器 原子尺度系统 奇怪行为
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2023/6/9
At the scale of individual atoms, physics gets weird. Researchers are working to reveal, harness, and control these strange quantum effects using quantum analog simulators — laboratory experiments tha...
New quantum computing architecture could be used to connect large-scale devices（图）
量子计算架构 大型设备 定向光子发射 量子互连
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2023/6/9
Quantum computers hold the promise of performing certain tasks that are intractable even on the world’s most powerful supercomputers. In the future, scientists anticipate using quantum computing to em...
For the first time, researchers at MIT, Caltech, Harvard University, and elsewhere sent quantum information across a quantum system in what could be understood as traversing a wormhole. Though this ex...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Quantum algorithms for nonlinear partial differential equations
非线性 偏微分方程 量子算法
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2023/5/16
Nonlinear partial differential equations (PDEs) are crucial to modelling important problems in science but they are computationally expensive and suffer from the curse of dimensionality. Since quantum...
2022 Bethe Lectures: Harnessing quantum matter for future technologies（图）
量子物质 电子相 查尔斯·凯恩 拓扑量子物质
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2023/5/19
Matter can arrange itself in ingenious ways; in addition to the solid, liquid and gas phases that are familiar in classical physics, electronic phases of matter -– some of them exotic and some useful ...
Brown mathematicians’ algorithm to serve as cryptography standard for quantum computing era（图）
算法 量子计算 密码学标准
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2023/6/26
The federal government selected four algorithms to serve as standards for public key security in the pending era of quantum computers, three of which are based on technology devised by a team of Brown...
Harvard partners with Amazon Web Services in quantum internet push（图）
量子互联网 量子劳动力 纳米系统中心
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2023/6/25
Harvard University and Amazon Web Services (AWS) on Monday launched a strategic alliance to advance fundamental research and innovation in quantum networking.