講座報(bào)告主題:亞普朗克傳感的類壓縮態(tài)
專家姓名:Naeem Akhtar
日期:2023-05-20 時(shí)間:14:00
地點(diǎn):物理樓401
主辦單位:物理與電子工程學(xué)院
主講簡(jiǎn)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.研究專長(zhǎng):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.
主講內(nèi)容簡(jiǎn)介:海森堡原理指出,,位置和動(dòng)量不確定性的乘積應(yīng)不小于普朗克常數(shù)設(shè)定的極限? /2.這通常被解釋為與亞普朗克尺度相關(guān)的相空間結(jié)構(gòu)不存在,,或者不重要,。然而,非局部量子疊加(或“薛定諤貓態(tài)”)被限制在以經(jīng)典作用a為特征的相空間體積內(nèi),,遠(yuǎn)大于?, 在亞普朗克尺度上形成斑點(diǎn)結(jié)構(gòu)。這些亞普朗克尺度的相空間特征對(duì)于確定這些狀態(tài)對(duì)相空間位移的敏感性至關(guān)重要,。我們?cè)谙嗫臻g中提出了另一組具有亞普朗克尺度結(jié)構(gòu)的類羅盤狀(四個(gè)相干態(tài)的疊加)態(tài),,并研究了它們對(duì)位移(擾動(dòng))靈敏度的影響。為了構(gòu)建指南針,,我們集中研究了海森堡-威爾,、SU(2)和SU(1,1)對(duì)稱性,。我們的研究包括對(duì)這種狀態(tài)的Wigner分析及其在計(jì)量學(xué)中的應(yīng)用,,以及這種狀態(tài)的產(chǎn)生。
歡迎師生參加,!