马尔可夫链蒙特卡罗探测器层析成像技术在NbTiN纳米电桥中的应用

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-06-18 DOI:10.1063/5.0271909

F. B. Baalbergen, I. E. Zadeh, M. P. van Exter, M. J. A. de Dood

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引用次数: 0

摘要

我们演示了使用灵活且高精度的马尔可夫链蒙特卡罗量子探测器层析成像方法作为最小化算法，以最好地描述有效的120 nm宽NbTiN超导纳米桥单光子探测器的响应。由于理想单光子阈值探测器与非统一单光子内量子效率探测器的饱和行为不同，内量子效率和外量子效率的分离是可能的。对T=(4.23±0.01)K， I=(29.4±0.1)μA, I/Iswitch=（0.90±0.01）时的测量结果进行统计分析，得到η为（1.60±0.05）×10−6的外量子效率，p1为0.568±0.008的单光子内量子效率，以及统一的多光子（两个或两个以上）内量子效率。

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Markov chain Monte Carlo detector tomography applied to a NbTiN nanobridge

We demonstrate the use of a flexible and highly accurate Markov chain Monte Carlo quantum detector tomography method as a minimization algorithm to best describe the response of an efficient 120 nm wide NbTiN superconducting nanobridge single photon detector. Separation of the internal quantum efficiency and external quantum efficiency is possible due to the difference in saturation behavior of an ideal one-photon threshold detector as compared to a detector with non-unity one-photon internal quantum efficiency. From a statistical analysis of our measurements (at T=(4.23 ± 0.01) K, I=(29.4 ± 0.1) μA, I/Iswitch=(0.90 ± 0.01)), we find an external quantum efficiency of η=(1.60 ± 0.05)×10−6, a one-photon internal quantum efficiency of p1=0.568 ± 0.008, and a unity multi-photon (two or more) internal quantum efficiency.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.