"Quadruple quantum: engineers perform four quantum control methods in just one atom" (2024) https://www.unsw.edu.au/newsroom/news/2024/02/four-different-ways-to

"Quadruple quantum: engineers perform four quantum control methods in just one atom" (2024) https://www.unsw.edu.au/newsroom/news/2024/02/four-different-ways-to-write-quantum-information-on-just-one-ato https://www.unsw.edu.au/newsroom/news/2024/02/four-different... : > [Antimony] was chosen because its nucleus possesses eight distinct quantum states, plus an electron with two quantum states, resulting in a total of 8 x 2 = 16 quantum states, all within just one atom. Reaching the same number of states using simple quantum bits – or qubits, the basic unit of quantum information – would require manufacturing and coupling four of them. "Navigating the 16-dimensional Hilbert space of a high-spin donor qudit with electric and magnetic fields" (2024) https://link.springer.com/article/10.1038/s41467-024-45368-y https://link.springer.com/article/10.1038/s41467-024-45368-y