Quantum Physics, Quantum Computing, Quantum Mechanics, Computer Science.
state by e^(−i α) giving: Equation 1.2 Switching back to cartesian representation for the coefficient of |1⟩, consider coefficient of |1⟩ in above equation as x+iy as it’s also complex number. So, r_α² (I have given _ symbol for subscript r subscript α)+ |x + iy|² = r_α² + (x − iy)*(x + iy) = r_α²