A5101904609- Photonic and Optical Devices
- Quantum Information and Cryptography
- Mechanical and Optical Resonators
- Quantum Computing Algorithms and Architecture
- Advanced Fiber Laser Technologies
- Nanowire Synthesis and Applications
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Optic Sensors
- Analytical Chemistry and Sensors
- Quantum and electron transport phenomena
- Neural Networks and Reservoir Computing
- Quantum Mechanics and Applications
- Semiconductor Quantum Structures and Devices
- Software Engineering Research
- Advanced Optical Sensing Technologies
- Optical Coatings and Gratings
- Advanced Computational Techniques and Applications
South China Normal University
2013-2021
Tsinghua University
2012-2016
Second Military Medical University
2012
A novel surface-oriented GaAs punch-through photodetector possessing a fast photoresponse and moderate internal gain is described. The device has simple planar MnM structure consisting of two Schottky contacts which thereby facilitate the fabrication. detector exhibits an rise time as 20 ps with full width at half maximum (FWHM) 35 ps. was estimated to be 3. noise equivalent power measured 4×10−11 W/√Hz. represents one fastest photodetectors reported date.
A novel photon-number-resolving detector based on serially connected superconducting nanowires is presented. The serial nanowire (SND) uses spatial multiplexing a subwavelength scale, the same as parallel (PND), to provide an output signal proportional number of incident photons and avoids problem leakage current that PND suffers from, thus allowing both high quantum efficiency large resolvable photons. Electrothermal simulation results SND exhibit better linearity than PND, influence some...
Instruction tuning on a mixture of tasks has improved zero-shot capabilities in natural language processing (NLP). Nevertheless, existing methods often learn features that exhibit correlations between instruction-formatted samples and target labels, rather than causal relationships. Termed as ``spurious correlation'' statistics, such correlation may change drastically new task, making the effect from learned to be misleading. To this end, we develop meta Structural Causal Model (meta-SCM)...
Increasing the detection efficiency (DE) is a hot issue in development of superconducting nanowire single photon detector (SNSPD). In this work, cavity-integrated structure coupled to SNSPD used enhance light absorption nanowire. Ultra-thin Nb films are successfully prepared by magnetron sputtering, which fabricate Nb/Al with curve 100 nm and square area 4 × μm2 sputtering lift-off method. To characterize optical electrical performance SNSPD, reliable cryogenic research system built up based...
By using a high-contrast grating (HCG, high transmittance <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="m1"> <mml:mrow> <mml:mo form="prefix">></mml:mo> <mml:mn>90</mml:mn> <mml:mo>%</mml:mo> </mml:mrow> </mml:math> ) to control the phase shift of incident light, we theoretically designed novel-structured HCG-integrated superconducting nanowire single-photon detector (HCG-SNSPD) with high-efficiency and large light-receiving area. Without enlarging typical...
Polymer micro/nanofibers (MNFs) represent a new class of polymer materials for all-optical signal processing, nanofiber laser and detection. This article reviews MNFs as active nanowire waveguide, different kinds optical sensors.
Monogamy relations characterize the distributions of quantum entanglement in multipartite systems. In this work, we present some tighter monogamy terms power Tsallis-q and R\'{e}nyi-$\alpha$ We show that these new with lower bounds than existing ones. Furthermore, three examples are given to illustrate tightness.