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Updated: Jun 14, 2026

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

Published on: August 30, 2012

Sensing individual terahertz photons.

Hideomi Hashiba¹, Vladimir Antonov, Leonid Kulik

¹Physics Department, Royal Holloway University of London, Egham, Surrey TW20 0EX, UK.

|March 30, 2010

Summary

This summary is machine-generated.

This study presents a novel sensor for single-photon counting of terahertz radiation. The device utilizes a quantum dot and superconducting transistor to detect plasma excitations, enabling sensitive measurements.

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Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

Area of Science:

Solid-state physics
Quantum electronics
Terahertz technology

Background:

Single-photon counting is crucial for terahertz (THz) radiation detection.
Existing THz detection methods face limitations in sensitivity and usability.
Plasma excitation in electron gas offers a promising avenue for THz sensing.

Purpose of the Study:

To demonstrate a novel, highly sensitive sensor for single-photon counting of THz radiation.
To utilize plasma excitation in a quantum dot system for THz detection.
To develop an easy-to-use sensor for the obscure THz wavelength region.

Main Methods:

Fabrication of a sensor comprising a GaAs/AlGaAs quantum dot, electron reservoir, and superconducting single-electron transistor.
Isolation of the quantum dot to facilitate electron tunneling upon plasma wave decay.
Detection of charge polarization using the single-electron transistor.

Main Results:

Successful demonstration of a functional single-photon counting sensor for THz radiation.
Sensitive probing of plasma excitation in the electron gas upon photon absorption.
Achieved reliable detection of single photons in the THz range.

Conclusions:

The developed sensor provides a sensitive and user-friendly method for single-photon counting of terahertz radiation.
The device leverages quantum dot plasma excitation for efficient THz detection.
This technology opens new possibilities for research and applications in the terahertz spectrum.