讲座报告主题:亚普朗克传感的类压缩态
专家姓名:Naeem Akhtar
日期:2023-05-20 时间:14:00
地点:物理楼401
主办单位:物理与电子工程学院
主讲简介:Naeem Akhtar have received my PhD degree from the University of Science and Technology of China (USTC) (Major: Physics, Quantum Information Physics) in 2021 under the supervision of Prof. Barry C. Sanders. Barry C. Sanders is the Professor in Physics and Director of the Institute for Quantum Science and Technology at the University of Calgary Canada, and Distinguished Chair Professor at University of Science and Technology Hefei China.研究专长:Theoretical study of non-classical quantum states related to the Heisenberg-Weyl, SU(2), and SU(1,1) groups, as well as their applications in metrology. Localization properties of particles in one-dimensional incommensurate lattices via Wigner function.
主讲内容简介:海森堡原理指出,位置和动量不确定性的乘积应不小于普朗克常数设定的极限ℏ /2.这通常被解释为与亚普朗克尺度相关的相空间结构不存在,或者不重要。然而,非局部量子叠加(或“薛定谔猫态”)被限制在以经典作用a为特征的相空间体积内,远大于ℏ, 在亚普朗克尺度上形成斑点结构。这些亚普朗克尺度的相空间特征对于确定这些状态对相空间位移的敏感性至关重要。我们在相空间中提出了另一组具有亚普朗克尺度结构的类罗盘状(四个相干态的叠加)态,并研究了它们对位移(扰动)灵敏度的影响。为了构建指南针,我们集中研究了海森堡-威尔、SU(2)和SU(1,1)对称性。我们的研究包括对这种状态的Wigner分析及其在计量学中的应用,以及这种状态的产生。
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