Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

IEEE MTT-S International Wireless Symposium (IWS)

Characterization of an 8×8 Al microwave kinetic inductance detector array

Zhi Li, Qing Shi, Wei-Tao Lv, Jing Li, Sheng‐Cai Shi

Published May 1, 2018• 0 citations
Publisher

Abstract

Chinese Antarctic Kunlun Observatory is planning to construct a 5-m THz telescope (DATE5) on Dome A, Antarctica. Therefore, a THz superconducting imaging array (TeSIA) is being proposed for DATE5 to serve its scientific goals. We test an 8×8 prototype Al microwave kinetic inductance detector (MKID) array for TeSIA in a3He/4He dilution refrigerator. The resonance frequencies are designed evenly distributed in 4-5.575 GHz band with 25 MHz intervals. The responses of the MKIDs with different bath temperatures are measured and the Q factors are calculated. Detailed measurement results and analysis will be discussed.

DOI
10.1109/ieee-iws.2018.8400969

Related papers

An 8×8 CPW MKIDs developed for terahertz superconducting imaging array

Jing Li, Qing Shi, Jinping Yang +8 more

China is planning to construct a 5-meter THz telescope named DATE5 at Dome A, Antarctica. This paper reports on the development of an 8×8 CPW microwave kinetic detectors (MKIDs) for the terahertz superconducting imaging array (TeSIA), which is an instrument proposed for the DATE5. The 8×8 CPW MKIDs, operating at 0.35THz, make use of TiN superconducting film of Tc approximately equal to 4.3K. The resonance frequencies of the MKIDs span the 4-5.575GHz band with an interval of 25MHz. The design, fabrication and characterization of the 8×8 CPW MKIDs are presented.

URSI Asia-Pacific Radio Science Conference•Aug 1, 2016•0 citations

Characterization of the quasiparticle lifetime of microwave kinetic inductance detector

Zhi Li, Wei-Tao Lv, Qing Shi +3 more

We design and fabricate a 350GHz 8×8 Al Microwave Kinetic Inductance Detector (MKIDs) array for the demonstration of its characteristics, mainly focus on the quasiparticle lifetime of the resonators. The quasiparticle lifetime data is collected by measuring a resonator’s phase response to a LED pulse at resonant frequency in a dilution refrigerator cooled to mK stage. We also measure and discuss the influence of various parameters on the change of quasiparticle lifetime, including different LED voltage supply, bath temperature of the MKIDs, and superconducting film thickness.

•Nov 24, 2021•0 citations

Design and Fabrication of Microwave Kinetic Inductance Detectors using NbN Symmetric Spiral Resonator Array

Kei Hayashi, Atsushi SAITO, Yasunobu Ogawa +9 more

We designed and fabricated a microwave kinetic inductance detector (MKID) using a niobium nitride (NbN) symmetric spiral resonator array. Previously we revealed that a rewound spiral structure works as not only a high-Q half-wavelength resonator but also as a broadband terahertz antenna. We conducted simulations for a 9 resonator array assuming NbN as the superconducting material and sapphire as the dielectric substrate, and obtained a maximum attenuation of over 30 dB and unloaded quality factors of over 2 × 10 5 for frequencies between 4.4 and 4.9 GHz. We fabricated the 9 resonator array MKID using NbN thin film deposited on an m-sapphire substrate by using dc magnetron sputtering. We observed half-wavelength resonances of around 4.5 GHz at 4 K. We measured the optical response of the MKID. The frequency shift was 0.5 MHz when illuminated with 650 nm photons.

Journal of Physics Conference Series•May 12, 2014•9 citations

Terahertz response of NbN-based microwave kinetic inductance detectors with rewound spiral resonator

Seiichiro Ariyoshi, Kensuke Nakajima, Atsushi SAITO +6 more

Abstract We have developed microwave kinetic inductance detectors (MKIDs) consisting of dual-purpose rewound spirals (spiral-MKIDs) made of a metal nitride superconductor for terahertz imaging applications. An NbN-based spiral-MKID array with 25 pixels was fabricated, and the fundamental performance of the terahertz receptivity was evaluated at the equilibrium temperature of a conventional 4 He refrigerator (≃3 K). The microwave transmission property of the array showed the 25 resonance lines, equally separated by frequency, in the microwave range from 2.70 to 2.95 GHz. To evaluate its optical performance as a terahertz detector, we measured the spiral-MKID’s spectral response, response time, and noise equivalent power (NEP), and confirmed that it revealed a broad spectral response from 1 to 9 THz and an effective response time of approximately 80 μ s. The noise-equivalent power was estimated to be .

Superconductor Science and Technology•Feb 2, 2016•8 citations

Characterization of the kinetic inductance fraction of NbTiN MKIDs

Wei-Tao Lv, Qing Shi, Jing Li +2 more

Microwave Kinetic Inductance Detectors (MKIDs), with high sensitivity and relatively simple frequency multiplexing, are emerging as a kind of large-array detectors in the terahertz (THz) band. An MKID, like a superconducting resonator, is composed of a planar capacitor and inductor that are made from superconducting films. The energy gap of the superconducting film for the planar inductor (at least part of it) is lower than the energy of photons to be detected. The kinetic inductance of the superconducting film irradiated by the photons is increased, shifting the resonance frequency toward a lower frequency. The frequency shift is proportional to the kinetic inductance fraction, i.e., the ratio of the kinetic inductance to the total inductance of the planar superconducting inductor. In this paper, we thoroughly investigate the kinetic inductance fraction for lumped-element and antenna-coupled MKIDs, which are both made from NbTiN. The detailed simulation, calculation, and measurement results will be presented.

Infrared, Millimeter-Wave, and Terahertz Technologies•Oct 8, 2021•0 citations

Characterization of distributed and lumped-element THz MKIDs

Wei-Tao Lv, Liang-si Zhou, Jing Li +2 more

Microwave Kinetic Inductance Detectors (MKIDs), just like a planar resonance cavity resonating at a microwave frequency, are emerging as a kind of high-sensitivity detector suitable for large format arrays at terahertz (THz) wavelengths. There are two types of MKIDs, namely distributed (or antenna-coupled) MKIDs and lumped-element MKIDs (aka LeKIDs). Various superconducting thin films (such as Al, TiN, NbTiN, NbN, and Nb) have been investigated for MKIDs. They do work so long as the detected photon energy exceeds their energy gap, but their response and noise behaviors are yet to be fully understood. Here we report on the design, fabrication, and characterization of distributed and lumped-element MKIDs made of NbTiN superconducting film. Detailed simulation and measurement results will be presented.

•Nov 24, 2021•0 citations
Chinese Antarctic Kunlun Observatory is planning to construct a 5-m THz telescope (DATE5) on Dome A, Antarctica. Therefore, a THz superconducting imaging array (TeSIA) is being proposed for DATE5 to serve its scientific goals. We test an 8×8 prototype Al microwave kinetic inductance detector (MKID) array for TeSIA in a3He/4He dilution refrigerator. The resonance frequencies are designed evenly distributed in 4-5.575 GHz band with 25 MHz intervals. The responses of the MKIDs with different bath temperatures are measured and the Q factors are calculated. Detailed measurement results and analysis will be discussed.
China is planning to construct a 5-meter THz telescope named DATE5 at Dome A, Antarctica. This paper reports on the development of an 8×8 CPW microwave kinetic detectors (MKIDs) for the terahertz superconducting imaging array (TeSIA), which is an instrument proposed for the DATE5. The 8×8 CPW MKIDs, operating at 0.35THz, make use of TiN superconducting film of Tc approximately equal to 4.3K. The resonance frequencies of the MKIDs span the 4-5.575GHz band with an interval of 25MHz. The design, fabrication and characterization of the 8×8 CPW MKIDs are presented.
We design and fabricate a 350GHz 8×8 Al Microwave Kinetic Inductance Detector (MKIDs) array for the demonstration of its characteristics, mainly focus on the quasiparticle lifetime of the resonators. The quasiparticle lifetime data is collected by measuring a resonator’s phase response to a LED pulse at resonant frequency in a dilution refrigerator cooled to mK stage. We also measure and discuss the influence of various parameters on the change of quasiparticle lifetime, including different LED voltage supply, bath temperature of the MKIDs, and superconducting film thickness.
We designed and fabricated a microwave kinetic inductance detector (MKID) using a niobium nitride (NbN) symmetric spiral resonator array. Previously we revealed that a rewound spiral structure works as not only a high-Q half-wavelength resonator but also as a broadband terahertz antenna. We conducted simulations for a 9 resonator array assuming NbN as the superconducting material and sapphire as the dielectric substrate, and obtained a maximum attenuation of over 30 dB and unloaded quality factors of over 2 × 10 5 for frequencies between 4.4 and 4.9 GHz. We fabricated the 9 resonator array MKID using NbN thin film deposited on an m-sapphire substrate by using dc magnetron sputtering. We observed half-wavelength resonances of around 4.5 GHz at 4 K. We measured the optical response of the MKID. The frequency shift was 0.5 MHz when illuminated with 650 nm photons.
Abstract We have developed microwave kinetic inductance detectors (MKIDs) consisting of dual-purpose rewound spirals (spiral-MKIDs) made of a metal nitride superconductor for terahertz imaging applications. An NbN-based spiral-MKID array with 25 pixels was fabricated, and the fundamental performance of the terahertz receptivity was evaluated at the equilibrium temperature of a conventional 4 He refrigerator (≃3 K). The microwave transmission property of the array showed the 25 resonance lines, equally separated by frequency, in the microwave range from 2.70 to 2.95 GHz. To evaluate its optical performance as a terahertz detector, we measured the spiral-MKID’s spectral response, response time, and noise equivalent power (NEP), and confirmed that it revealed a broad spectral response from 1 to 9 THz and an effective response time of approximately 80 μ s. The noise-equivalent power was estimated to be .
Microwave Kinetic Inductance Detectors (MKIDs), with high sensitivity and relatively simple frequency multiplexing, are emerging as a kind of large-array detectors in the terahertz (THz) band. An MKID, like a superconducting resonator, is composed of a planar capacitor and inductor that are made from superconducting films. The energy gap of the superconducting film for the planar inductor (at least part of it) is lower than the energy of photons to be detected. The kinetic inductance of the superconducting film irradiated by the photons is increased, shifting the resonance frequency toward a lower frequency. The frequency shift is proportional to the kinetic inductance fraction, i.e., the ratio of the kinetic inductance to the total inductance of the planar superconducting inductor. In this paper, we thoroughly investigate the kinetic inductance fraction for lumped-element and antenna-coupled MKIDs, which are both made from NbTiN. The detailed simulation, calculation, and measurement results will be presented.
Microwave Kinetic Inductance Detectors (MKIDs), just like a planar resonance cavity resonating at a microwave frequency, are emerging as a kind of high-sensitivity detector suitable for large format arrays at terahertz (THz) wavelengths. There are two types of MKIDs, namely distributed (or antenna-coupled) MKIDs and lumped-element MKIDs (aka LeKIDs). Various superconducting thin films (such as Al, TiN, NbTiN, NbN, and Nb) have been investigated for MKIDs. They do work so long as the detected photon energy exceeds their energy gap, but their response and noise behaviors are yet to be fully understood. Here we report on the design, fabrication, and characterization of distributed and lumped-element MKIDs made of NbTiN superconducting film. Detailed simulation and measurement results will be presented.