Fast spin information transfer between distant quantum dots using individual electrons

Understand

Transporting ensembles of electrons over long distances without losing their spin polarization is an important benchmark for spintronic devices.

• It requires usually to inject and to probe spin polarized electrons in conduction channels using ferromagnetic contacts or optical excitation.
• Parallel to this development, an important effort has been dedicated to the control of nanocircuits at the single electron level.
• The detection and the coherent manipulation of the spin of a single electron trapped in a quantum dot are now well established.