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Kim, Dai-Sik
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Terahertz rectification in ring-shaped quantum barriers

DC Field Value Language Kang, Taehee ko Kim, R. H. Joon-Yeon ko Choi, Geunchang ko Lee, Jaiu ko Park, Hyunwoo ko Jeon, Hyeongtag ko Park, Cheol-Hwan ko Kim, Dai-Sik ko 2019-05-14T06:29:16Z - 2019-03-11 ko 2018-11 ko
dc.identifier.citation NATURE COMMUNICATIONS, v.9, no.1, pp.4914 ko
dc.identifier.issn 2041-1723 ko
dc.identifier.uri -
dc.description.abstract Tunneling is the most fundamental quantum mechanical phenomenon with wide-ranging applications. Matter waves such as electrons in solids can tunnel through a one-dimensional potential barrier, e.g. an insulating layer sandwiched between conductors. A general approach to control tunneling currents is to apply voltage across the barrier. Here, we form closed loops of tunneling barriers exposed to external optical control to manipulate ultrafast tunneling electrons. Eddy currents induced by incoming electromagnetic pulses project upon the ring, spatiotemporally changing the local potential. The total tunneling current which is determined by the sum of contributions from all the parts along the perimeter is critically dependent upon the symmetry of the loop and the polarization of the incident fields, enabling full-wave rectification of terahertz pulses. By introducing global geometry and local operation to current-driven circuitry, our work provides a novel platform for ultrafast optoelectronics, macroscopic quantum phenomena, energy harvesting, and multi-functional quantum devices. ko
dc.language 영어 ko
dc.title Terahertz rectification in ring-shaped quantum barriers ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85056947487 ko
dc.identifier.wosid 000450754900009 ko
dc.type.rims ART ko
dc.identifier.doi 10.1038/s41467-018-07365-W ko
dc.identifier.url ko
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