Quantum Electrodynamics with Semiconductor Quantum Dots Coupled to Anderson-localized Random Cavities

摘要

We demonstrate that the spontaneous emission decay rate of semiconductor quantum dots can be strongly modified by the coupling to disorder-induced Anderson-localized photonic modes. We experimentally measure, by means of time-resolved photoluminescence spectroscopy, the enhancement of the spontaneous emission decay rate by up to a factor 15 and an efficiency of channeling single photons into Anderson-localized modes reaching values as high as 94percent. These results prove that disordered photonic media provide an efficient platform for quantum electrodynamics, offering a novel route to quantum information devices exploiting disorder as a resource rather than a nuisance.