Jifeng Qu
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View article: Sequential Optimization and Azimuthal Combination Micro Fault Earthquake Prediction Method
Sequential Optimization and Azimuthal Combination Micro Fault Earthquake Prediction Method Open
With the continuous improvement of exploration level, the remaining trap scale of the Kelasu structural belt is becoming smaller and facing more complex geological conditions. Therefore, this study focuses on the Bozi Dabei area as the key…
View article: Trimetallic Pt-Pd-Au alloy nanozymes for multimodal synergistic therapy to overcome deep-seated drug-resistant infections via ROS cascade
Trimetallic Pt-Pd-Au alloy nanozymes for multimodal synergistic therapy to overcome deep-seated drug-resistant infections via ROS cascade Open
To address the therapeutic challenges posed by deep-tissue drug-resistant bacterial infections, this study innovatively develops a multimodal synergistic therapeutic platform based on platinum-palladium-gold trimetallic alloy nanozymes (PP…
View article: Multi-parameter microwave quantum sensing with a single atomic probe
Multi-parameter microwave quantum sensing with a single atomic probe Open
We demonstrate a multi-parameter sensing scheme for free space microwave electric and magnetic fields in single vapor cell based on the atom-based microwave detection techniques. A weak probe laser though a rubidium vapor cell first acts a…
View article: Underwater acoustic target signal enhancement algorithm optimized by feature preservation and noise update
Underwater acoustic target signal enhancement algorithm optimized by feature preservation and noise update Open
With the development of shock absorption and noise reduction technology, it is difficult to use existing aquatic target feature extraction techniques to extract weak signal features from complex marine environments. Therefore, underwater a…
View article: Simulation Analysis of Phase Jitter in Differential Sampling of AC Waveforms Based on the Programmable Josephson Voltage Standard
Simulation Analysis of Phase Jitter in Differential Sampling of AC Waveforms Based on the Programmable Josephson Voltage Standard Open
The effect of phase jitter on differential sampling using the programmable Josephson voltage standard (PJVS) system is studied in this paper. A phase jitter model is established for the measured signal, and compensation coefficients for ph…
View article: Differential Sampling of AC Waveforms Based on a Commercial Digital-to-Analog Converter for Reference
Differential Sampling of AC Waveforms Based on a Commercial Digital-to-Analog Converter for Reference Open
This paper introduces an innovative differential sampling technique for calibrating AC waveforms, leveraging a commercially available 16-bit digital-to-analog converter (DAC) as the reference standard. The novelty of this approach lies in …
View article: Practical realisation of the kelvin by Johnson noise thermometry
Practical realisation of the kelvin by Johnson noise thermometry Open
Johnson noise thermometry (JNT) is a purely electronic method of thermodynamic thermometry. In primary JNT, the temperature is inferred from a comparison of the Johnson noise voltage of a resistor at the unknown temperature with a pseudo-r…
View article: In-Plane Porous Graphene: A Promising Anode Material with High Ion Mobility and Energy Storage for Rubidium-Ion Batteries
In-Plane Porous Graphene: A Promising Anode Material with High Ion Mobility and Energy Storage for Rubidium-Ion Batteries Open
Rubidium-ion batteries (RIBs) have received a lot of attention in the quantum field because of their fast release and reversible advantages as alkali sources. However, the anode material of RIBs still follows graphite, whose layer spacing …
View article: Atom-based sensing technique of microwave electric and magnetic fields via a single rubidium vapor cell
Atom-based sensing technique of microwave electric and magnetic fields via a single rubidium vapor cell Open
We present an atom-based approach for determining microwave electric and magnetic fields by using a single rubidium vapor cell in a microwave waveguide. For a 87 Rb cascade three-level system employed in our experiment, a weak probe laser …
View article: Fabrication of an ultra-high quality MgF<sub>2</sub> micro-resonator for a single soliton comb generation
Fabrication of an ultra-high quality MgF<sub>2</sub> micro-resonator for a single soliton comb generation Open
Crystalline micro-resonators are attractive for a wide range of applications due to their extremely high quality (Q) factor. In this paper, we develop a semi-automatic method for fabricating ultra-high Q-factor MgF 2 crystalline micro-reso…
View article: Inverse design of soliton microcomb based on genetic algorithm and deep learning
Inverse design of soliton microcomb based on genetic algorithm and deep learning Open
Soliton microcombs generated by the third-order nonlinearity of microresonators exhibit high coherence, low noise, and stable spectra envelopes, which can be designed for many applications. However, conventional dispersion engineering base…
View article: An On-Chip Silicon Photonics Thermometer with Milli-Kelvin Resolution
An On-Chip Silicon Photonics Thermometer with Milli-Kelvin Resolution Open
Photonic-based thermometers have been attracting intense research interest as a potential alternative to traditional electrical thermometers due to their physical and chemical stability and immunity to electromagnetic interference. However…
View article: The Microfabricated Alkali Vapor Cell with High Hermeticity for Chip-Scale Atomic Clock
The Microfabricated Alkali Vapor Cell with High Hermeticity for Chip-Scale Atomic Clock Open
Herein, a microfabricated millimeter-level vapor alkali cell with a high hermeticity is fabricated through a wet etching and single-chip anodic bonding process. The vapor cell, containing Rb and N2, was investigated in a coherent populatio…
View article: Monolayer H-MoS<sub>2</sub> with high ion mobility as a promising anode for rubidium (cesium)-ion batteries
Monolayer H-MoS<sub>2</sub> with high ion mobility as a promising anode for rubidium (cesium)-ion batteries Open
MoS 2 -anode-based RIBs and CIBs are innovative batteries with high theoretical capacity and rate capacity.
View article: Photonic thermometer by silicon nitride microring resonator with milli-kelvin self-heating effect
Photonic thermometer by silicon nitride microring resonator with milli-kelvin self-heating effect Open
Whispering gallery mode (WGM) photonic thermometer had achieved ultra-high sensitivity and resolution. However, while pursuing extremely high quality factor and thereafter high precision, power-induced self-heating within microcavity can b…
View article: Rabi resonance in coherent population trapping: microwave mixing scheme
Rabi resonance in coherent population trapping: microwave mixing scheme Open
Coherent population trapping (CPT) resonance signals have promise in a wide range of applications involving precision sensing. Generally, the CPT phenomenon occurs in a three-level Λ system with a bichromatic phase-coherent light fields. W…
View article: Fabrication and Characterization of a Quantum Voltage Noise Source Chip for a Johnson Noise Thermometer
Fabrication and Characterization of a Quantum Voltage Noise Source Chip for a Johnson Noise Thermometer Open
A Johnson noise thermometer (JNT) determines the thermodynamic temperature through cross-correlation measurement of the Johnson noise in a sense resistor at an unknown temperature. In the quantum voltage calibrated JNT system, a supercondu…
View article: Recent progress of superconducting electronics in China
Recent progress of superconducting electronics in China Open
It has been nearly 110 years since the discovery of superconductors, and more than 30 years since the discovery of high temperature superconductors (HTS). Great progress has been made in the application of superconducting electronics in th…
View article: Photonic thermometer with a sub-millikelvin resolution and broad temperature range by waveguide-microring Fano resonance
Photonic thermometer with a sub-millikelvin resolution and broad temperature range by waveguide-microring Fano resonance Open
Fano resonance theoretically is an effective approach for sensitivity enhancement in photonic sensing applications, but the reported methods suffer from complicated structure and fabrication, narrow dynamic range, etc. In this article, we …
View article: Atomic Receiver by Utilizing Multiple Radio-Frequency Coupling at Rydberg States of Rubidium
Atomic Receiver by Utilizing Multiple Radio-Frequency Coupling at Rydberg States of Rubidium Open
Rydberg atoms have been extensively utilized in microwave measurement with high sensitivity, which has great potential in the field of communication. In this study, we discuss the digital communication based on a Rydberg atomic receiver un…
View article: Johnson noise thermometry
Johnson noise thermometry Open
Johnson noise thermometers infer thermodynamic temperature from measurements of the thermally-induced current fluctuations that occur in all electrical conductors. This paper reviews the status of Johnson noise thermometry and its prospect…
View article: Microwave magnetic field imaging based on Rabi resonance with an alkali-atom vapor cell
Microwave magnetic field imaging based on Rabi resonance with an alkali-atom vapor cell Open
In this work, we demonstrate a microwave magnetic field imaging technique based on Rabi resonance with a cesium atom vapor cell. Rabi resonance signals are generated when atoms interact with a phase-modulated microwave (MW) field and are d…
View article: Field Distortion and Optimization of a Vapor Cell in Rydberg Atom-Based Radio-Frequency Electric Field Measurement
Field Distortion and Optimization of a Vapor Cell in Rydberg Atom-Based Radio-Frequency Electric Field Measurement Open
Highly excited Rydberg atoms in a room-temperature vapor cell are promising for developing a radio-frequency (RF) electric field (E-field) sensor and relevant measurement standards with high accuracy and sensitivity. The all-optical sensin…
View article: Microwave magnetic field detection based on Cs vapor cell in free space
Microwave magnetic field detection based on Cs vapor cell in free space Open
In this study, we demonstrate the direct measurement of a microwave (MW) magnetic field through the detection of atomic Rabi resonances with Cs vapor cells in a free-space low-Q cavity. The line shape (amplitude and linewidth) of detected …
View article: The Boltzmann project
The Boltzmann project Open
The International Committee for Weights and Measures (CIPM), at its meeting in October 2017, followed the recommendation of the Consultative Committee for Units (CCU) on the redefinition of the kilogram, ampere, kelvin and mole. For the re…
View article: Catalytic Decomposition of Nitrogen Oxides by Bimetallic Catalysts Synthesized by Dielectric Barrier Discharge Plasma Technology
Catalytic Decomposition of Nitrogen Oxides by Bimetallic Catalysts Synthesized by Dielectric Barrier Discharge Plasma Technology Open
Nitrous oxide (N 2 O) is a common greenhouse gas and urgent need to be contained. Direct catalytic decomposition of N 2 O by high activity catalyst into N 2 and O 2 is a low-cost and harmless method. Bimetallic catalysts show good catalyti…