Recent content by begyu85

Yes, the distribution of the random qubits is uniform... My first thought was this what you are saying...but is this answer correct? I mean this would be so simple... In the first case i will get some statistics, and i have to transform to an other one.. Question: does this transformation...

Hi, One can describe a pure qubit in two ways (onto the bloch-sphere): 1.) one take a (\alpha,\beta) , where \alpha,\beta are complex numbers and \left|\alpha\right|^{2}+\left|\beta\right|^{2}=1. 2.) with a real 3-dimensional unit vector. Bob wants that Alice generate one million random...

Homework Statement I have a random, uniformly distributed vector with Cartesian components x,y,z. I should calculate the expectation value of the products of the components, e.g. <x\cdot x>, <x\cdot y>, ..., <z\cdot z>. Homework Equations In spherical coordinates the x,y,z components...

i think, this mean value is a tensor of 3x3

vector mean value - help! Homework Statement Let n = (n_1, n_2, n_3) be a random unit vector in Descartes coordinates in the 3-dimensional space. What is the mean value (or expectation value) of n_i*n_j, where i,j = 1,2,3. Or shortly: < n_i*n_j > = ?