Two-qubit cells made of boron nitride nanotubes for a quantum computer
Mikhail B. Belonenko, Nikolay G. Lebedev · Technical Physics · 2009
The electronic structure of boron nitride nanotubes (8, 0) with intercalated alkali metal atoms and alkaline-earth metal ions is studied. It is shown by calculation that the spin density is localized on individual atoms or ions. The antiferromagnetic state of a linear chain of atoms and ions turns out to be energetically more favorable. Exchange interaction between spins is fairly weak. Such systems are suggested to be used as two-qubit cells for a quantum computer.