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Free-running InGaAs/InP single-photon detectors (SPDs) based on negative-feedback avalanche diodes (NFADs) are the key components for applications requiring asynchronous single-photon detection in the near-infrared region. From the…

Instrumentation and Detectors · Physics 2024-02-20 Qi Xu , Chao Yu , Wei Chen , Jianglin Zhao , Dajian Cui , Jun Zhang , Jian-Wei Pan

The use of Unmanned Aerial Vehicles (UAVs) as a substitute for ordinary vehicles in applications of search and rescue is being studied all over the world due to its flexible mobility and less obstruction, including two main tasks: search…

Robotics · Computer Science 2021-10-06 Nikite Mesvan

Superconducting nanowire single-photon detectors are an enabling technology for modern quantum information science and are gaining attractiveness for the most demanding photon counting tasks in other fields. Embedding such detectors in…

High-efficiency single-photon detection in the microwave domain is a key enabling technology for quantum sensing, communication, and information processing. However, the extremely low energy of microwave photons (~{\mu}eV) presents a…

Long-range active imaging has a variety of applications in remote sensing and target recognition. Single-photon LiDAR (light detection and ranging) offers single-photon sensitivity and picosecond timing resolution, which is desirable for…

Image and Video Processing · Electrical Eng. & Systems 2020-09-07 Zheng-Ping Li , Xin Huang , Yuan Cao , Bin Wang , Yu-Huai Li , Weijie Jin , Chao Yu , Jun Zhang , Qiang Zhang , Cheng-Zhi Peng , Feihu Xu , Jian-Wei Pan

We experimentally investigated the detection performance of highly disordered NbxTi1-xN based superconducting nanowire single photon detectors (SNSPDs). The dependence on the composition of the transition temperature Tc for NbxTi1-xN films…

Superconductivity · Physics 2022-10-28 Ruoyan Ma , Rui Shu , Xingyu Zhang , Aobo Yu , Huang Jia , You Xiao , Huiqin Yu , Xiaoyu Liu , Hao Li , Per Eklund , Xiaofu Zhang , Lixing You

Advances in silicon (Si) photonics at submicrometer wavelengths are unlocking new opportunities to realize miniaturized, scalable optical systems for biophotonics, quantum information, imaging, spectroscopy, and displays. Addressing this…

Excitons in atomically-thin semiconductors interact very strongly with electromagnetic radiation and are necessarily close to a surface. Here, we exploit the deep-subwavelength confinement of surface plasmon polaritons (SPPs) at the edge of…

The influence of the reactive DC sputtering parameters on the superconducting properties of NbReN ultrathin films was investigated. A detailed study of the current-voltage characteristics of the plasma was performed to optimize the…

Visible and near-infrared spectrum photonic integrated circuits are quickly becoming a key technology to address the scaling challenges in quantum information and biosensing. Thus far, integrated photonic platforms in this spectral range…

Superconducting strip single-photon detectors offer excellent photon detection performance and are indispensable tools for cutting-edge optical science and technologies, including photonic quantum computation and quantum networks.…

Quantum Physics · Physics 2024-03-12 Masahiro Yabuno , Fumihiro China , Hirotaka Terai , Shigehito Miki

Single-photon detector (SPD), an essential building block of the quantum communication system, plays a fundamental role in developing next-generation quantum technologies. In this work, we propose an efficient modeling workflow of nanowire…

Applied Physics · Physics 2023-10-31 Zhe Li , H. Hoe Tan , Chennupati Jagadish , Lan Fu

This paper presents a detailed investigation of superconducting nanowire single-photon detectors (SNSPDs) biased with microwave and direct currents. We developed a hybrid detector, which allows the operation in the rf and dc operation mode.…

Instrumentation and Detectors · Physics 2019-03-27 Steffen Doerner , Artem Kuzmin , Stefan Wuensch , Michael Siegel

We demonstrate waveguide-integrated superconducting nanowire single-photon detectors on thin-film lithium niobate (LN). Using a 250 um-long NbN superconducting nanowire lithographically defined on top of a 125 um-long LN nanowaveguide,…

Applied Physics · Physics 2019-12-20 Ayed Al Sayem , Risheng Cheng , Sihao Wang , Hong X. Tang

Superconducting nanowire single-photon detectors (SNSPDs) show near unity efficiency, low dark count rate, and short recovery time. Combining these characteristics with temporal control of SNSPDs broadens their applications as in active…

Obstacle avoidance is a key feature for safe Unmanned Aerial Vehicle (UAV) navigation. While solutions have been proposed for static obstacle avoidance, systems enabling avoidance of dynamic objects, such as drones, are hard to implement…

Robotics · Computer Science 2018-08-02 Adrian Carrio , Sai Vemprala , Andres Ripoll , Srikanth Saripalli , Pascual Campoy

Scalable, high speed data transfer between cryogenic (0.1-4 K) and room temperature environments is instrumental in a broad range of fields including quantum computing, superconducting electronics, single photon imaging and space-based…

Applied Physics · Physics 2020-02-04 Marc de Cea , Emma E. Wollman , Amir H. Atabaki , Dodd J. Gray , Matthew D. Shaw , Rajeev J. Ram

State readout of trapped-ion qubits with trap-integrated detectors can address important challenges for scalable quantum computing, but the strong rf electric fields used for trapping can impact detector performance. Here, we report on…

The past few years have witnessed the burst of drone-based applications where computer vision plays an essential role. However, most public drone-based vision datasets focus on detection and tracking. On the other hand, the performance of…

Computer Vision and Pattern Recognition · Computer Science 2022-08-29 Xiaoyu Lin

Single-Photon Avalanche Detector (SPAD) arrays are a rapidly emerging technology. These multi-pixel sensors have single-photon sensitivities and pico-second temporal resolutions thus they can rapidly generate depth images with millimeter…

Image and Video Processing · Electrical Eng. & Systems 2022-10-12 Stirling Scholes , Germán Mora-Martín , Feng Zhu , Istvan Gyongy , Phil Soan , Jonathan Leach
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