Qubit: The Sphere of Superposition
Grab the Bloch sphere, see quantum gates as rotations around axes, and collapse the state with a measurement beam while statistics build up.
Two poles
The sphere before you is the entire state space of a single qubit. The north pole is |0⟩, the south pole |1⟩. A classical bit only moves between these two points, but a qubit’s state can stand anywhere on this sphere. First switch pole to pole and watch the arrow of light run down the sphere.
Switch between |0⟩ and |1⟩ and watch the arrow move between the north and south poles.
Basis states — stand at the sphere’s poles
|ψ⟩=1.00|0⟩ +e^(iφ)0.00|1⟩
State & Statistics
P(0)100%
P(1)0%