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摘要： In Nielsen and Chuang's QCQI, there are three kinds of measurement: general measurement, projective measurement, positive operator valued measurement( 阅读全文

摘要： Quasi Probability method clear all; clc; theta = pi/4; p = 0.3; % initial state psi = 1/sqrt(2)*[1;exp(1j*theta)]; rho = psi*psi'; sx = [0 1;1 0]; sy 阅读全文

摘要： Mainly about Choi-Jamiolkowski isomorphism. It means that any quantum channel can found a correspoding matrix with it. Their connection is 1 to 1 and 阅读全文

摘要： $|1 − e^{i\theta}| ≥ 2|\theta|/\pi$ whenever $−\pi ≤ \theta ≤ \pi$ $-log x\ge (1-x)/ln2$ where $log$ has base $2$. $\left(\begin{array}{cccc} \Pi_{1} 阅读全文

摘要： #Beamer Page number \setbeamertemplate{footline}[frame number] links 1 Formula fonts \usefonttheme[onlymath]{serif} links 1 Hide numbers of some slide 阅读全文

摘要： 怎样用Mathematica解带字母的方程组？ Clear Variable. Clear["Global`*"]; Variable is positive real with assumptions. ref $Assumptions = Element[Subscript[\[Theta], 阅读全文

摘要： 添加快捷键 阅读全文

摘要： Useful linkes: https://www.rampfesthudson.com/does-law-of-large-numbers-imply-central-limit-theorem/ https://en.wikipedia.org/wiki/Central_limit_theor 阅读全文

摘要： \[ we\,\,want\,\,to\,\,prove\,\,that \\ ad\left( ab \right) -ad\left( ba \right) =ad\left( a \right) ad\left( b \right) -ad\left( b \right) ad\left( a 阅读全文

摘要： Quantum Fourier Transform: $$\sum_{j=0}{N-1}{x_j|j\rangle}\Rightarrow \sum_{j=0}{N-1}{x_j\frac{1}{\sqrt{N}}\sum_{k=0}{N-1}{e{2\pi i\frac{jk}{N}}|k\ran 阅读全文