Browsing by Subject "strong coupling (TESC) spectroscopy"
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Item Tip-enhanced strong coupling spectroscopy, imaging, and control of a single quantum emitter(American Association for the Advancement of Science, 2019-02-27) Park, Kyoung-Duck; May, Molly A.; Leng, Haixu; Wang, Jiarong; Kropp, Jaron A.; Gougousi, Theodosia; Pelton, Matthew; Raschke, Markus B.Optical cavities can enhance and control light-matter interactions. This has recently been extended to the nanoscale, and with single emitter strong coupling regime even at room temperature using plasmonic nano-cavities with deep sub-diffraction-limited mode volumes. However, with emitters in static nanocavities, this limits the ability to tune coupling strength or to couple different emitters to the same cavity. Here, we present tip-enhanced strong coupling (TESC) spectroscopy, imaging, and control. Based on a nano-cavity formed between a scanning plasmonic antenna-tip and the substrate, by reversibly and dynamically addressing single quantum dots (QDs) we observe mode splitting > 160 meV and anticrossing over a detuning range of ~100 meV, and with sub-nm precision control over the mode volume in the ~103 nm3 regime. Our approach, as a new paradigm of nano-cavity quantum-electrodynamics nearfield microscopy to induce, probe, and control single-emitter plasmon hybrid quantum states, opens new pathways from opto-electronics to quantum information science.