Two-path solid-state interferometry using ultra-subwavelength two-dimensional plasmonic waves

Kitty Y.M. Yeung; Hosang Yoon; William Andress; Ken West; Loren Pfeiffer; Donhee Ham

doi:10.1063/1.4775668

Two-path solid-state interferometry using ultra-subwavelength two-dimensional plasmonic waves

Kitty Y.M. Yeung, Hosang Yoon, William Andress, Ken West, Loren Pfeiffer, Donhee Ham

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

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 gigahertz proof-of-concept at cryogenic temperatures can be scaled to the terahertz-infrared range for room temperature operation, while maintaining the benefits of ultra-subwavelength confinement.

Original language	English (US)
Article number	021104
Journal	Applied Physics Letters
Volume	102
Issue number	2
DOIs	https://doi.org/10.1063/1.4775668
State	Published - Jan 14 2013
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4775668

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title = "Two-path solid-state interferometry using ultra-subwavelength two-dimensional plasmonic waves",

abstract = "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 gigahertz proof-of-concept at cryogenic temperatures can be scaled to the terahertz-infrared range for room temperature operation, while maintaining the benefits of ultra-subwavelength confinement.",

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T1 - Two-path solid-state interferometry using ultra-subwavelength two-dimensional plasmonic waves

AU - Yeung, Kitty Y.M.

AU - Yoon, Hosang

AU - Andress, William

AU - West, Ken

AU - Pfeiffer, Loren

AU - Ham, Donhee

PY - 2013/1/14

Y1 - 2013/1/14

N2 - 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 gigahertz proof-of-concept at cryogenic temperatures can be scaled to the terahertz-infrared range for room temperature operation, while maintaining the benefits of ultra-subwavelength confinement.

AB - 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 gigahertz proof-of-concept at cryogenic temperatures can be scaled to the terahertz-infrared range for room temperature operation, while maintaining the benefits of ultra-subwavelength confinement.

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Two-path solid-state interferometry using ultra-subwavelength two-dimensional plasmonic waves

Abstract

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