Tip-enhanced strong coupling spectroscopy, imaging, and control of a single quantum emitter

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1902.10314.pdf (3.2 MB)

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https://www.science.org/doi/10.1126/sciadv.aav5931

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http://hdl.handle.net/11603/13135
 https://doi.org/10.1126/sciadv.aav5931

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UMBC Physics Department
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Author/Creator ORCID

https://orcid.org/0000-0001-6396-9706
 https://orcid.org/0000-0002-6370-8765

Date

2019-02-27

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journal articles pre-prints
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Citation of Original Publication

Park, Kyoung-Duck et al. Tip-enhanced strong coupling spectroscopy, imaging, and control of a single quantum emitter. Science Advances 5 (July 12, 2019), no. 7. https://doi.org/10.1126/sciadv.aav5931

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Subjects

optical nano-cavities
light-matter interactions
strong coupling (TESC) spectroscopy
imaging and control
nano-cavity quantum-electrodynamics near-field microscopy

Abstract

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.