Using the Bloch sphere, a cubit
can be represented as a unit vector (shown in red) from the origin to the point on the unit sphere with spherical coordinates
. A single-qubit quantum gate
produces a rotated qubit
, represented by the green vector. Check the box for "add gate 2?" to perform a second operation using gate
. This produces another qubit
, which is represented by the blue vector. You can choose from the gates H, X, Y, Z, S and T as defined in the Details.