A physical ball whose LED colors rotate according to SU(2) provides a hands-on visualization of qubit states, Hopf fibration, Berry phase, Hamiltonian evolution, and Born-rule measurement statistics.
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The spinorial ball (II): a manipulable qubit at human scale
A physical ball whose LED colors rotate according to SU(2) provides a hands-on visualization of qubit states, Hopf fibration, Berry phase, Hamiltonian evolution, and Born-rule measurement statistics.