研究发现，半导体量子点中单电子与电子库的相互作用导致了康德效应的独特表现。通过光谱测量，揭示了单光子吸收引发的系统哈密顿ian的突变和量子猝灭，这与Kondo关系中的正交奇异性有关。实验观察到的吸收线形源于Kondo效应，并且通过外部磁场可以调控关联指数，从而明确证明了观测到的吸收谱源于Kondo效应。这些实验展示了在人工原子中进行光学测量为研究以往仅通过输运光谱学研究的多体现象提供了新的视角。
摘要：
The interactionetweeningleonfinedpinndhepinsfn electroneservoir leadsonefheostemarkable phenomenafany-body physics—the Kondo effect~(1,2). Electronicransporteasurementsninglertificialtoms,r quantum dots,aveade it possibleotudyhe effect in great detail~(3-5).ere weeportpticaleasurementsningleemiconductor quantum dotunnel-coupledo degenerate electron gas whichhowhatbsorptionfingle photon leadsonbrupthange inheystemamiltoniannd quantum quenchf Kondoorrelations.y inferringheharacteristic power-law exponentsromhe experimentalbsorption linehapes, weindniqueignaturefhe quench inheormfnndersonrthogonalityatastrophe~(6,7), inducedy vanishingverlapetweenhe initialndinalany-body wavefunctions. Wehowhathe power-law exponenthat determineshe degreefrthogonalityaneunedsingn externalagneticield~8, whichnequivocally demonstrateshathebservedbsorption linehaperiginatesrom Kondoorrelations.ur experiments demonstratehatpticaleasurementsninglertificialtomsffer new perspectivesnany-body phenomena previouslytudiedsingransportpectroscopynly.
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