Two-Path Solid-State Interferometry Using Ultra-Subwavelength 2D Plasmonic Waves

Autor:	Yeung, Kitty Y. M., Yoon, Hosang, Andress, William, West, Ken, Pfeiffer, Loren, Ham, Donhee
Rok vydání:	2012
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
DOI:	10.1063/1.4775668
Popis:	We report an on-chip solid-state Mach-Zehnder interferometer operating on two-dimensional (2D) plasmonic waves at microwave frequencies. Two plasmonic paths are defined with GaAs/AlGaAs 2D electron gas 80 nm below a metallic gate. The gated 2D plasmonic waves achieve a velocity of ~c/300 (c: free-space light speed). Due to this ultra-subwavelength confinement, the resolution of the 2D plasmonic interferometer is two orders of magnitude higher than that of its electromagnetic counterpart at a given frequency. This GHz proof-of-concept at cryogenic temperatures can be scaled to the THz IR range for room temperature operation, while maintaining the benefits of the ultra-subwavelength confinement. Comment: 18 pages, 11 figures. The article has been submitted to Applied Physics Letters. After it is published, it will be found at http://apl.aip.org/
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1212.4170 Zobrazit plný text záznamu View this record from Arxiv