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A titanium-nitride near-infrared kinetic inductance photon-counting detector and its anomalous electrodynamics
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10.1063/1.4756916
/content/aip/journal/apl/101/14/10.1063/1.4756916
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/14/10.1063/1.4756916
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Spectra of the signal (solid lines), noise (dashed lines), and the signal-to-noise ratio (SNR, dotted lines) in the frequency quadrature (blue) and dissipation quadrature (green) measured at 100 mK. The two-level-system (TLS) noise (red) is inferred from the difference of the noise in the two quadratures. The resonator shows GHz and (internal ). We use a readout power dBm that is 1 dB below resonator saturation (bifurcation). Inset: the optical lumped-element (OLE) MKID design.

Image of FIG. 2.
FIG. 2.

A histogram of the optimally filtered pulse height (normalized by the template pulse) using the frequency readout. A 4-peak Gaussian fit to the data is shown by the yellow dashed lines, where the 4 peaks from the fitting result are indicated individually. Inset: the area in each Gaussian peak normalized by the total area (blue) fits to a Poisson distribution with (red). The red curve in the main figure shows a convolved profile of the Poisson distribution with and the 4 Gaussians.

Image of FIG. 3.
FIG. 3.

Anomalous response of TiN MKID. (a) Pulse response at 100 mK. (b) Pulse response at 190 mK. (c) Temperature-dependent frequency response and dissipation response measured for 20 nm TiN () as compared to 200 nm Al (). is the measured kinetic inductance fraction24 and is a film-dependent index that takes values of 1 in the thin-film limit and 1/3 in the extreme-anomalous limit.25 Fits using Mattis-Bardeen formula with and are indicated by the dotted lines and solid lines, respectively. In (a) and (b), the pulse responses in the two quadratures are normalized by the peak frequency responses. In all the plots, frequency responses are presented in blue and dissipation responses are in green.

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/content/aip/journal/apl/101/14/10.1063/1.4756916
2012-10-05
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A titanium-nitride near-infrared kinetic inductance photon-counting detector and its anomalous electrodynamics
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/14/10.1063/1.4756916
10.1063/1.4756916
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