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Superconductor and Semiconductor-Based Radiation Detectors

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 3893

Special Issue Editors


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Guest Editor
Istituto Nanoscienze - CNR, via Campi 213/a, 411125 Modena, Italy
Interests: hybrid quantum circuits; microwaves, spins; diamond; magnons; semiconductor quantum dots; superconducting and dielectric resonators

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Guest Editor
Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Università di Modena e Reggio Emilia, Via Campi 213/a, 41125 Modena, Italy
Interests: nanoscale semiconductors; electrical and thermal transport; semiconductor nanowires
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Special Issue Information

Dear Colleagues,

The detection of low energy electromagnetic radiation is relevant for a wide range of applications that span between off-the-shelf technologies, such as those employed in imaging systems or for material spectroscopies, and fundamental science studies in quantum technologies or dark matter searches. The realization of efficient detectors of low energy radiation is extremely challenging and requires optimized devices and materials. Superconducting and semiconducting circuits provide different, yet complementary, approaches: a rich selection of cutting-edge devices, including also single-photon detectors and counters, has been reported in the literature. Despite this, efficient detectors are still lacking in specific frequency ranges, in which prevailing technology has not emerged yet.

The aim of this Special Issue of Sensors on “Superconductor and Semiconductor-Based Radiation Detectors” is to provide an opportunity for physicists to share research results relevant to the realization of low energy radiation detectors based on either superconducting or semiconducting circuits. The Special Issue welcomes original research articles that address the non-exhaustive list of keywords reported below.

Dr. Alberto Ghirri
Dr. Francesco Rossella
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • microwave radiation detectors
  • terahertz radiation detectors
  • superconducting circuits
  • quantum dots
  • semiconductor nanostructures
  • single-photon detectors
  • photon counters

Published Papers (2 papers)

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Research

18 pages, 1072 KiB  
Article
Aligning Superconducting Transition-Edge Sensors by Reflected Wave Intensity Measurement
by Pei-Sa Ma, Hong-Fan Zhang and Xingxiang Zhou
Sensors 2023, 23(7), 3495; https://doi.org/10.3390/s23073495 - 27 Mar 2023
Viewed by 1332
Abstract
It is critical to accurately align a quantum photon detector such as a superconducting transition-edge sensor (TES) to an optical fiber in order to optimize its detection efficiency. Conventionally, such alignment requires advanced infrared imaging equipment or sophisticated microfabrication. We introduce a novel [...] Read more.
It is critical to accurately align a quantum photon detector such as a superconducting transition-edge sensor (TES) to an optical fiber in order to optimize its detection efficiency. Conventionally, such alignment requires advanced infrared imaging equipment or sophisticated microfabrication. We introduce a novel technique based on the simple idea of reflected wave intensity measurement which allows to determine the boundary of the sensor and align it accurately with the fiber. By routing a light wave through an optical fiber for normal incidence on the surface of the sensor chip, and separating the reflected wave coupled back into the fiber from the input signal with a circulator, we can observe the variation in the reflected wave intensity when the beam spot of the fiber crosses the boundary between the sensor and substrate that have different reflectivity, and adjust the position of the fiber such that its output falls on the sensor. We evaluate quantitatively the precision of our alignment method, as well as the conditions that must be met to avoid photon loss caused by light beam divergence. After demonstrating the working principle of our scheme and verifying the alignment result experimentally, we employ it for efficient input signal coupling to a TES device, which is used for photon-number-resolving measurement to showcase the successful application of our alignment method in practice. Relying on only ordinary and widely used optical elements that are easy to operate and low in cost, our solution is much less demanding than conventional methods. Dramatically easier to implement and not restricted by the detection mechanism of the sensor, it is accessible to a much broader community. Full article
(This article belongs to the Special Issue Superconductor and Semiconductor-Based Radiation Detectors)
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12 pages, 1217 KiB  
Article
State-of-the-Art Room Temperature Operable Zero-Bias Schottky Diode-Based Terahertz Detector Up to 5.56 THz
by Rahul Yadav, Florian Ludwig, Fahd Rushd Faridi, J. Michael Klopf, Hartmut G. Roskos, Sascha Preu and Andreas Penirschke
Sensors 2023, 23(7), 3469; https://doi.org/10.3390/s23073469 - 26 Mar 2023
Cited by 6 | Viewed by 1915
Abstract
We present the characterization of a Zero-bias Schottky diode-based Terahertz (THz) detector up to 5.56 THz. The detector was operated with both a table-top system until 1.2 THz and at a Free-Electron Laser (FEL) facility at singular frequencies from 1.9 to 5.56 THz. [...] Read more.
We present the characterization of a Zero-bias Schottky diode-based Terahertz (THz) detector up to 5.56 THz. The detector was operated with both a table-top system until 1.2 THz and at a Free-Electron Laser (FEL) facility at singular frequencies from 1.9 to 5.56 THz. We used two measurement techniques in order to discriminate the sub-ns-scale (via a 20 GHz oscilloscope) and the ms-scale (using the lock-in technique) responsivity. While the lock-in measurements basically contain all rectification effects, the sub-ns-scale detection with the oscilloscope is not sensitive to slow bolometric effects caused by changes of the IV characteristic due to temperature. The noise equivalent power (NEP) is 10 pW/Hz in the frequency range from 0.2 to 0.6 THz and 17 pW/Hz at 1.2 THz and increases to 0.9 μW/Hz at 5.56 THz, which is at the state of the art for room temperature zero-bias Schottky diode-based THz detectors with non-resonant antennas. The voltage and current responsivity of ∼500 kV/W and ∼100 mA/W, respectively, is demonstrated over a frequency range of 0.2 to 1.2 THz with the table-top system. Full article
(This article belongs to the Special Issue Superconductor and Semiconductor-Based Radiation Detectors)
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