Animation of the gate teleportation mechanism

This animation depicts the gate teleportation mechanism of one pass of a photonic qubit through the scattering unit. Bloch sphere depictions of the evolution of the states of the photon and the atom are shown. The rotations about z by fixed angles (grey) are applied by the phase shifter and beamsplitter, while the rotation about y by a controllable angle θ (magenta) is applied to the atom using the cavity laser. Projectively measuring the atom teleports this rotation onto the photon. This operation is a universal single-qubit primitive: by composing several of these operations and adapting subsequent rotation angles based on measurement outcomes, arbitrary single-qubit gates can be deterministically constructed.