A5089502337- Mass Spectrometry Techniques and Applications
- Advanced Optical Sensing Technologies
- Superconducting and THz Device Technology
- Physics of Superconductivity and Magnetism
- Radio Frequency Integrated Circuit Design
- Photocathodes and Microchannel Plates
- Semiconductor Quantum Structures and Devices
- Ultrasound Imaging and Elastography
- Photonic and Optical Devices
- Ga2O3 and related materials
- CCD and CMOS Imaging Sensors
- Flow Measurement and Analysis
- Advancements in Semiconductor Devices and Circuit Design
- Atomic and Molecular Physics
- Electron and X-Ray Spectroscopy Techniques
- Ultrasonics and Acoustic Wave Propagation
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Materials Characterization Techniques
- Semiconductor materials and devices
- Radiation Therapy and Dosimetry
- Quantum and electron transport phenomena
- Radiation Detection and Scintillator Technologies
- Analytical Chemistry and Chromatography
- Advanced Chemical Physics Studies
- Diamond and Carbon-based Materials Research
École Polytechnique Fédérale de Lausanne
2022-2025
City University of Hong Kong
2019
A significant number of cryogenic low-noise amplifiers (cryo-LNAs) are required for the readout superconducting nanowire detector (SNWD) arrays. It is desirable to have compact cryo-LNAs in place so that size circuitry SNWD array can be reduced. In this study, we first examined bandwidth, linearity, and noise requirements cryo-LNA readout. After that, design implementation a wideband silicon–germanium (SiGe) BiCMOS were described detail. The LNA features two cascode stages with resistive...
The interconnects between a quantum processor and control electronics can be made more compact reliable by placing classical circuits at cryogenic temperature (CT), closer to that of qubits. Low ambient is also favorable lower the noise electronics, which critical for computing applications. Qubit requires microwave signals modulated baseband arbitrary waveform envelopes, so as generate 10ns-to-100ns periodic pulsed manipulate qubit state [1].In order prevent dephasing, carrier should have...
Microchannel plates are electron multipliers widely used in applications such as particle detection, imaging, or mass spectrometry and often paired with a photocathode to enable photon detection. Conventional microchannel plates, made of glass fibers, face limitations manufacturing flexibility integration electronic readouts. Hydrogenated amorphous silicon-based offer compelling alternative provide unique advantages these areas. Here, we report on the characterization time resolution plates....
Abstract This paper explores the retention time (RT) properties of dynamic random-access memory (DRAM) arrays at cryogenic temperatures (4 K). We provide an in-depth examination leakage sources to elucidate RT behaviour across different temperatures, and we conduct a study on mismatch between DRAM cells, highlighting various trade-offs, including cell area, mismatch, time, power consumption. Our findings offer valuable insights for circuit designers working large-scale quantum computing or...
The analysis of proteins in the gas phase benefits from detectors that exhibit high efficiency and precise spatial resolution. Although modern secondary electron multipliers already address numerous analytical requirements, additional methods are desired for macromolecules at energies lower than currently used post-acceleration detection. Previous studies have proven sensitivity superconducting to high-energy particles time-of-flight mass spectrometry. Here, we demonstrate nanowire...
This work demonstrates the feasibility of an ultrasonic rangefinder with a sensing range up to 1.5m based on single piezoelectric micromachined transducer (PMUT) fabricated using multi-user MEMS process (MUMPs). The dual-electrode design presented herein has been used isolate transmit (TX) and received (RX) paths within PMUT, thereby avoiding issues frequency mismatch that is common dual-PMUT designs. reported minimum detection limit 0.3m.
Cryo-CMOS control of qubits has been proposed to increase compactness and reliability reduce latency. Several BulklFD-SOl CMOS/FinFET qubit controllers have designed operate inside a dilution refrigerator (DF) at - 4K for interfacing various [1]–[3]. Alternatively, SiGe HBT can also well cryogenic temperatures (CTs) exceptional noise [4] linearity characteristics, making it suitable with qubits.
Since the early 20th century, molecular beam research has led to many advances in physics and chemistry, from precision molecule metrology, over tests of fundamental symmetries, quantum optics applied mass spectrometry. All such experiments share a common interest isolating molecules high vacuum eliminate any perturbing environment be able probe particle’s response tailored optical, electrical or magnetic fields. Here we propose scheme explore properties charge-reduced neutral biopolymers...
<title>Abstract</title> Hydrogenated amorphous silicon based microchannel plates (AMCPs) provide unique advantages over conventional glass-based plates, offering enhanced flexibility in manufacturing and vertical integration with an electronic readout. A high single-channel gain of 1500 could be measured the latest generation, making them attractive choice for a wide range applications, including medical imaging, mass spectrometry, particle physics experiments. time resolution 4.6±0.1ps...
The analysis of proteins in the gas phase benefits from detectors that exhibit high efficiency and precise spatial resolution. Although modern secondary electron multipliers already address numerous analytical requirements, new methods are desired for macromolecules at low energy. Previous studies have proven sensitivity superconducting to high-energy particles time-of-flight mass spectrometry. Here we explore a energy regime demonstrate nanowire exceptionally well suited quadrupole Our an...
Single-photon avalanche diodes (SPADs), also referred to as Geiger-mode photodiodes, are primarily utilized in photon detection and counting. In this work, we present a measurement of the time-of-flight minimum ionizing particles with outstanding timing resolution, achieved by using SPADs direct particle detectors. We have measured 120 GeV/c momentum pions coincidence time resolution 15 ps full-width-at-half-maximum (FWHM) at system level.