A plot of a cat state |3> + |-3> for PHYS776 (Resch, Spring 2017) - Assignment 2, Problem 5

Problem5Plot.jl

import Plots
Plots.plotly()

function f(B)
    return function (a,b)
        (2/pi)*(
                2*e^(-2*(a^2+b^2))*cos(4*b*B)
                +
                e^(-2*((a+B)^2+b^2))*(1+e^(8*a*B))
               )
    end
end

x = y = -4:1e-1:4
Plots.plot(x,y,f(3),linetype=:surface)