[RpL 590] Новая статья о новой модели SSPD

[pashan]

В конце августа на арксиве появилась статья Швейцарских коллег о 
"простой, но мощной теоретической модели, позволяющей выявить 
существенные различия между конкурирующими механизмами" (We present a 
simple, but powerful theoretical model that allows us to identify 
essential differences between competing detection mechanisms.)

Полный абстракт:

The microscopic mechanism of photon detection in superconducting 
nanowire single-photon detectors is still under debate. We present a 
simple, but powerful theoretical model that allows us to identify 
essential dif- ferences between competing detection mechanisms. The 
model is based on quasi-particle multiplication and diffusion after the 
absorption of a photon. We then use the calculated spatial and temporal 
evolution of this quasi-particle cloud to determine detection criteria 
of three distinct detection mechanisms, based on the formation of a 
normal conducting spot, the reduction of the effective depairing 
critical current below the bias current and a vortex-crossing scenario, 
respectively. All our calculations as well as a comparison to exper- 
imental data strongly support the vortex-crossing detection mechanism by 
which vortices and antivortices enter the superconducting strip from the 
edges and subsequently traverse it thereby triggering the detectable 
normal conducting domain. Refined models may help one to obtain a better 
understanding of the microscopic detection principles and to reach the 
best possible performance of these detectors.


Ссылка на арксиве: http://arxiv.org/abs/1308.5781

-- 
Sincerely,Pavel An.
Moscow State Pedagogical University
Radiophysics Science & Educational Centre
29 Malaya Pirogovskaya St.,Moscow, 119992 Russia
Tel: +7(499)246-8899/-1202
Fax: +7(499)246-6321