title: Tailoring light-matter coupling in semiconductor and hybrid-plasmonic nanowires.
abstract: Understanding interactions between light and matter is central to many fields, providing invaluable insights into the nature of matter. In its own right, a greater understanding of light-matter coupling has allowed for the creation of tailored applications, resulting in a variety of devices such as lasers, switches, sensors, modulators, and detectors. Reduction of optical mode volume is crucial to enhancing light-matter coupling strength, and among solid-state systems, self-assembled semiconductor and hybrid-plasmonic nanowires are amenable to creation of highly-confined optical modes. Following development of unique spectroscopic techniques designed for the nanowire morphology, carefully engineered semiconductor nanowire cavities have recently been tailored to enhance light-matter coupling strength in a manner previously seen in optical microcavities. Much smaller mode volumes in tailored hybrid-plasmonic nanowires have recently allowed for similar breakthroughs, resulting in sub-picosecond excited-state lifetimes and exceptionally high radiative rate enhancement. Here, we review literature on light-matter interactions in semiconductor and hybrid-plasmonic monolithic nanowire optical cavities to highlight recent progress made in tailoring light-matter coupling strengths. Beginning with a discussion of relevant concepts from optical physics, we will discuss how our knowledge of light-matter coupling has evolved with our ability to produce ever-shrinking optical mode volumes, shifting focus from bulk materials to optical microcavities, before moving on to recent results obtained from semiconducting nanowires.
authors.affiliation: Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
authors.forename: Brian
authors.initials: B
authors.lastname: Piccione
authors.forename: Carlos O
authors.initials: CO
authors.lastname: Aspetti
authors.forename: Chang-Hee
authors.initials: CH
authors.lastname: Cho
authors.forename: Ritesh
authors.initials: R
authors.lastname: Agarwal
mesh_terms: D003198:Computer Simulation; D004735:Energy Transfer; D004867:Equipment Design; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D008962:Models, Theoretical; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure*; D012542:Scattering, Radiation; D012666:Semiconductors; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
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