Autler-Townes doublet observation via a Cooper-pair beam splitter
M. O. Assunção, G. S. Diniz, L. Sanz, F. M. Souza
DOI 10.1103/PhysRevB.98.075423 · Physical Review B
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Abstract
We present a proof-of-principle of how electronic transport measurements permit the observation of the Autler-Townes doublet, an optical property of nanodevices. The quantum physical system consists of one optically pumped quantum dot, a second auxiliary quantum dot, and a superconductor lead, which provides an effective coupling between the dots via crossed Andreev reflection. Electrodes, working as sources or drains, act as nonequilibrium electronic reservoirs. Our calculations of the photocurrent at both transient and stationary regimes, obtained using a density matrix formalism for open quantum systems, shows signatures of the formation of the Autler-Townes doublet, caused by the interplay between the optical pumping and the crossed Andreev reflection.
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