Spin-photon interaction in a nanowire quantum dot with asymmetrical confining potential

被引：1
|
作者：
Li, Rui [1 ]
机构：
[1] Yanshan Univ, Sch Sci, Key Lab Microstruct Mat Phys Hebei Prov, Qinhuangdao 066004, Peoples R China
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2024年 / 36卷 / 19期
基金：
中国国家自然科学基金;
关键词：
nanowire quantum dot; spin-orbit coupling; spin-photon interaction; asymmetrical confining potential; COHERENCE; FIDELITY; NOISE;
D O I：
10.1088/1361-648X/ad22fa
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
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 |zeg| , or 0.1 MHz in terms of frequency eE0|zeg|/h for a moderate cavity electric field strength E0=0.4 V m-1.
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页数：8
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