A broadband superconducting detector suitable for use in large arrays

Day, Peter; Leduc, H. G.; Mazin, Benjamin A.; Vayonakis, Anastasios; Žmuidzinas, J.

doi:10.1038/nature02037

Cited by 1,299 publications

(1,079 citation statements)

References 28 publications

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“…1 Under load from a power source at high enough frequency, a superconductor will have Cooper pairs broken, creating quasiparticles. This will cause a resonator will shift in frequency, due to a change in kinetic inductance, and simultaneously decrease the quality factor, Q, due to an increase in resistance.…”

Section: Introductionmentioning

confidence: 99%

MKID multicolor array status and results from DemoCam

Schlaerth¹,

Czakon

Day

et al. 2010

SPIE Proceedings

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We present the results of the latest multicolor Microwave Kinetic Inductance Detector (MKID) focal plane arrays in the submillimeter. The new detectors on the arrays are superconducting resonators which combine a coplanar waveguide section with an interdigitated capacitor, or IDC. To avoid out-of-band pickup by the capacitor, a stepped-impedance filter is used to prevent radiation from reaching the absorptive aluminum section of the resonator. These arrays are tested in the preliminary demonstration instrument, DemoCam, a precursor to the Multicolor Submillimeter Inductance Camera, MUSIC. We present laboratory results of the responsivity to light both in the laboratory and at the Caltech Submillimeter Observatory. We assess the performance of the detectors in filtering out-of-band radiation, and find the level of excess load and its effect on detector performance. We also look at the array design characteristics, and the implications for the optimization of sensitivities expected by MUSIC.

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Section: Introductionmentioning

confidence: 99%

MKID multicolor array status and results from DemoCam

Schlaerth¹,

Czakon

Day

et al. 2010

SPIE Proceedings

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“…Конкурирующими решениями являются два типа детекторов: нерав-новесный детектор на кинетической индуктивности (MKID) [2] и болометрический сенсор, в котором разогрев поглотителя измеряется равновесным сенсором на краю сверхпроводящего перехода (TES) [3,4]. Важным преимуществом MKID является интегральная схема считыва-ния на частотах порядка 1 GHz с единственным полупроводниковым усилителем стандарта 50 .…”

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Сверхпроводящий резонатор с микромостиком из гафния при температурах 50-350 mK

Меренков¹,

Шитов²,

Чичков³

et al. 2018

Письма В Журнал Технической Физики

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A high-quality superconducting resonator with a microbridge of hafnium film for use in a circuit for readout a terahertz-band imaging array with frequency division multiplexing is demonstrated experimentally. The variability of the impedance of the bridge at a frequency of 1.5 GHz, which is a key factor in the control of the quality of the resonator, is studied. The bridge, having a thickness of about 50 nm, a critical temperature T _ C ≈ 380 mK, and a plan size of 2.5 × 2.5 μm, was connected as a load of a resonator made of niobium film with a thickness of about 100 nm ( T _ C ~ 9 K). It is shown that the bridge smoothly changes its impedance proportionally to the bias power in the entire temperature range. The effective thermal insulation of the bridge was measured in a dilution cryostat at temperatures of 50–300 mK. Thermal conductivity G of the bridge was calculated and found to be ~4 × 10^–13 W/K, which gives an estimate of the sensitivity of the structure in the bolometric mode NEP ≈ 8 × 10^–19 W/Hz^1/2 at a temperature of 150 mK.

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“…For instance, film tungsten TESs have been reported over 95% quantum efficiency and photon-number resolving ability at 1550 nm [8]; also, the reported bulk titanium TESs have shown 98% ± 1% detection efficiency at 850 nm [2]. Alternatively, another kind of superconducting microwave detector based on coplanar waveguide technique, typically the coplanar waveguide resonators (CPWs), have also promptly developed for sensitive detections of radiations (from submillimeter to x-ray [9] and gamma ray [10]) in astronomic applications. Typically, CPW detector works within the GHz wave band, and possesses two main advantages: i) the fabrication is relatively simple (since the CPW device normally consist of one thin film layer which deposited on a silicon or sapphire substrate), and ii) the scalability is more obvious (they are convenient to multiplex as a large array, can be operated simultaneously with only one wide-band amplifier and readout via one commercial electronics system [11]).…”

Section: Introductionmentioning

confidence: 99%

Microwave Resonators for Weak Light Detection at Telecom Wavelength

Zhou¹,

Wang²,

Wei³

et al. 2014

PIER

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Abstract-We report the experimental measurements of weak light signal at 1550 nm wavelength with a high-quality factor microwave coplanar waveguide (CPW) resonators. The quality factor of this niobium λ/4 CPW resonator is measured as Q = 7.4 × 10 5 at ultra-low temperature (20 mK). With this device, we developed a technique to implement the proper fiber-resonator coupling, and realized the desirable weak light detection at telecommunication wavelength with 35 pW resolution by probing the shift of resonance frequency (f 0 ). We found that the resonator shift increases with the increasing light power (from 11.7 pW to 9.77 nW), similar to the effects of increasing the system temperature (from 20 mK to 800 mK). The observed blue shifts of f 0 (with the increasing of either the temperature and the applied light powers) are thoroughly deviated from the usual Mattis-Bardeen theory prediction, and could be explained by the effects relating to the two-level system existed on surface of the CPW device.

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A broadband superconducting detector suitable for use in large arrays

Cited by 1,299 publications

References 28 publications

MKID multicolor array status and results from DemoCam

MKID multicolor array status and results from DemoCam

Сверхпроводящий резонатор с микромостиком из гафния при температурах 50-350 mK

Microwave Resonators for Weak Light Detection at Telecom Wavelength

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