Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crosstalk Reduction for Superconducting Microwave Resonator Arrays   Large-scale arrays of Microwave Kinetic Inductance Detectors (MKIDs) are
attractive candidates for use in imaging instruments for next generation
submillimeter-wave telescopes such as CCAT. We have designed and fabricated
tightly packed ~250-pixel MKID arrays using lumped-element resonators etched
from a thin layer of superconducting TiNx deposited on a silicon substrate. The
high pixel packing density in our initial design resulted in large microwave
crosstalk due to electromagnetic coupling between the resonators. Our second
design eliminates this problem by adding a grounding shield and using a
double-wound geometry for the meander inductor to allow conductors with
opposite polarity to be in close proximity. In addition, the resonator
frequencies are distributed in a checkerboard pattern across the array. We
present details for the two resonator and array designs and describe a circuit
model for the full array that predicts the distribution of resonator
frequencies and the crosstalk level. We also show results from a new
experimental technique that conveniently measures crosstalk without the need
for an optical setup. Our results reveal an improvement in crosstalk from 57%
in the initial design down to \leq 2% in the second design. The general
procedure and design guidelines in this work are applicable to future large
arrays employing microwave resonators.

24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin