Spin-photon interaction in a nanowire quantum dot with asymmetrical confining potential
arXiv:2309.14693 · doi:10.1088/1361-648X/ad22fa
Abstract
The electron (hole) spin-photon interaction is studied in an asymmetrical InSb (Ge) nanowire quantum dot. The spin-orbit coupling in the quantum dot mediates not only a transverse spin-photon interaction, but also a longitudinal spin-photon interaction due to the asymmetry of the confining potential. Both the transverse and the longitudinal spin-photon interactions have non-monotonic dependence on the spin-orbit coupling. For realistic spin-orbit coupling in the quantum dot, the longitudinal spin-photon interaction is much (at least one order) smaller than the transverse spin-photon interaction. The order of the transverse spin-photon interaction is about 1 nm in terms of length , or 0.1 MHz in terms of frequency for a moderate cavity electric field strength V/m.
8 pages, 6 figures
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