Electron g factor engineering in III-V semiconductors for quantum communications

An entanglement-preserving photodetector converts photon polarisation to electron spin. Up and down spin must respond equally to oppositely polarised photons, creating a requirement for degenerate spin energies. g/sub e//spl sime/0, for electrons. The authors present a plot of g/sub e/ factor against lattice constant, analogous to bandgap against lattice constant, that can be used for g factor engineering of III-V alloys and quantum wells.

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