# $\lvert 1\rangle$
The quantum state $\lvert 1\rangle$ is quantum state written in Dirac notation that corresponds to the (0, 0, -1) 

It's represented by the following column vector

$$\lvert 1\rangle = \begin{pmatrix}0\\ 1\end{pmatrix}$$

It corresponds to the south pole one the Bloch sphere.