Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reducing current crowding in meander superconducting strip single-photon
  detectors by thickening bends   To facilitate high optical coupling efficiency and absorptance, the active
area of a superconducting nano/microstrip single-photon detector (SNSPD/SMSPD)
is often designed as a meander configuration with a high filling factor (e.g.,
>=0.5). However, the switching current (Isw) of SNSPD/SMSPD, at which the
detector switches into the normal state, is significantly suppressed by a
geometry-induced "current crowding effect", where there are sharp bends in the
strip. Here we propose and experimentally verify an alternative method to
reduce current crowding both in SNSPD and SMSPD by directly increasing the
thickness of the bends through the deposition and lift-off of a secondary
superconducting film. We measure and compare the performance of SNSPDs and
SMSPDs with different filling factors and bend configurations, with or without
thickened bends. Improvements for detectors were observed in detection
efficiency, intrinsic dark count rate, and time jitter, owing to the enhanced
Isw. Our method provides a promising way of optimizing SNSPD/SMSPD detection
performance.

15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg