Physicists at the University of Sydney have achieved a breakthrough in quantum computing by creating a universal logic gate inside a single atom.

Using a powerful error-correcting system known as the Gottesman-Kitaev-Preskill (GKP) code — often called the “Rosetta Stone” of quantum computing — they managed to entangle vibrations of a trapped ion. This achievement drastically reduces the number of physical qubits needed, tackling one of the biggest hurdles in scaling quantum computers and bringing practical, large-scale quantum machines closer to reality.