Quantum wells research reveals collective spin excitations are less susceptible to spin orbit fields

An international team of researchers have been looking at the the problems created by internal fields called spin-orbit fields (which create spin-decoherence, when the electronic spins behaves in a way which cannot be completely controlled or predicted).

The researchers studied quantum wells, where the spins can be excited in a collective, coherent way by using lasers and light scattering. They found out that these collective spin excitations possess a macroscopic spin of quantum nature - which means that the electrons and their spin act as a single entity and thus they are less susceptible to spin orbit fields.

The researchers hope that in the future it will be possible to use collective excitations as signals to transport information at the quantum level.

Posted: Apr 28,2013 by Ron Mertens