Search Results - "Choi, Gahyun"
-
1
Information flow among stocks, bonds, and convertible bonds
Published in PloS one (23-03-2023)“…This study examines the information flow between convertible bonds (CBs) and other investment assets, such as stocks and bonds. In particular, we employ…”
Get full text
Journal Article -
2
Characterization of broadband Purcell filters with compact footprint for fast multiplexed superconducting qubit readout
Published in Applied physics letters (22-01-2024)“…Engineering the admittance of external environments connected to superconducting qubits is essential, as increasing the measurement speed introduces…”
Get full text
Journal Article -
3
Optical and Raman spectroscopies of 171Yb3+:Y2SiO5 hyperfine structure for application toward microwave-to-optical transducer
Published in Journal of the Korean Physical Society (2024)“…This study analyzed the optical techniques for high-resolution, low-noise spectroscopy of a hyperfine structure (HFS) made of ytterbium-isotope-171 ion ( 171…”
Get full text
Journal Article -
4
Schottky barrier modulation of metal/4H-SiC junction with thin interface spacer driven by surface polarization charge on 4H-SiC substrate
Published in Applied physics letters (21-12-2015)“…The Au/Ni/Al2O3/4H-SiC junction with the Al2O3 film as a thin spacer layer was found to show the electrical characteristics of a typical rectifying Schottky…”
Get full text
Journal Article -
5
Analysis of Eddy-Current Probe Signals in Steam Generator U-Bend Tubes Using the Finite Element Method
Published in Applied sciences (01-01-2021)“…To ensure the integrity and safety of steam generator tubes in nuclear power plants, eddy-current testing is periodically employed. Because steam generators…”
Get full text
Journal Article -
6
Largely‐Tuned Effective Work‐Function of Al/Graphene/SiO2/Si Junction with Electric Dipole Layer at Al/Graphene Interface
Published in Advanced electronic materials (01-11-2024)“…The effective work‐function of metal electrode is one of the major factors to determine the threshold voltage of metal/oxide/semiconductor junction. In this…”
Get full text
Journal Article -
7
Observation of a Strongly Enhanced Relaxation Time of an In-situ Tunable Transmon on a Silicon Substrate up to the Purcell Limit Approaching 100 μs
Published in Journal of the Korean Physical Society (01-06-2020)“…The remarkable advances of quantum computation technology with superconducting qubits based on circuit quantum electrodynamics (QED) architecture have been…”
Get full text
Journal Article -
8
Price fairness: Clean energy stocks and the overall market
Published in Chaos, solitons and fractals (01-03-2023)“…This study analyzes the current status and potential of clean energy stocks compared with the overall stock market index, particularly in terms of market…”
Get full text
Journal Article -
9
How the COVID-19 pandemic changed travel behaviour? A case study on public bikes in Seoul
Published in Research in transportation economics (01-11-2023)“…This study aims to examine how travel behaviour has changed after the COVID-19 outbreak, specifically focusing on the use of public bikes in Seoul. In January…”
Get full text
Journal Article -
10
A study on the microstructure and power generation performance of colored BIPV modules
Published in Renewable energy (01-12-2024)“…The need for greenhouse gas reduction and carbon neutrality is increasing, and the Building Integrated Photovoltaic (BIPV) power generation system is emerging…”
Get full text
Journal Article -
11
Flux-driven Josephson Parametric Amplifier Fabricated Using the Nb/AlOx/Nb Trilayer Process
Published in IEEE transactions on applied superconductivity (01-08-2023)“…In this paper, we report a flux-driven Josephson par-ametric amplifier (JPA) fabricated using the Nb/AlOx/Nb Josephson junction process. The JPA consists of a…”
Get full text
Journal Article -
12
Flux-Driven Josephson Parametric Amplifier Fabricated Using the Nb/AlO x /Nb Trilayer Process
Published in IEEE transactions on applied superconductivity (01-08-2023)“…In this paper, we report a flux-driven Josephson parametric amplifier (JPA) fabricated using the Nb/AlOx/Nb Josephson junction process. The JPA consists of a…”
Get full text
Journal Article -
13
Information flow among stocks, bonds, and convertible bonds
Published in PloS one (01-01-2023)“…This study examines the information flow between convertible bonds (CBs) and other investment assets, such as stocks and bonds. In particular, we employ…”
Get full text
Journal Article -
14
Negative Fermi-Level Pinning Effect of Metal/n-GaAs(001) Junction Induced by a Graphene Interlayer
Published in ACS applied materials & interfaces (18-12-2019)“…It is demonstrated that the electric dipole layer due to the overlapping of electron wave functions at the metal/graphene contact results in a negative…”
Get full text
Journal Article -
15
High-fidelity Multiplexed Single-shot Readout for Transmon Qubits with High-power Measurement
Published in IEEE transactions on applied superconductivity (01-08-2023)“…Single-shot readout of a quantum state is an essential component in building a large-scale quantum processor, andreduc-ing the readout error is the key…”
Get full text
Journal Article -
16
Strong Fermi-Level Pinning at Metal/n-Si(001) Interface Ensured by Forming an Intact Schottky Contact with a Graphene Insertion Layer
Published in Nano letters (11-01-2017)“…We report the systematic experimental studies demonstrating that a graphene layer inserted at metal/n-Si(001) interface is efficient to explore interface…”
Get full text
Journal Article -
17
Largely‐Tuned Effective Work‐Function of Al/Graphene/SiO 2 /Si Junction with Electric Dipole Layer at Al/Graphene Interface
Published in Advanced electronic materials (01-11-2024)“…The effective work‐function of metal electrode is one of the major factors to determine the threshold voltage of metal/oxide/semiconductor junction. In this…”
Get full text
Journal Article -
18
Multi-Level Capacitive Memory Effect in Metal/Oxide/Floating-Schottky Junction
Published in Journal of the Korean Physical Society (01-05-2019)“…We experimentally demonstrate that metal/oxide/floating-Schottky junction has multiple effective capacitances depending on the amount of electrons stored in…”
Get full text
Journal Article -
19
A 5.5mW/Channel 2-to-7 GHz Frequency Synthesizable Qubit-Controlling Cryogenic Pulse Modulator for Scalable Quantum Computers
Published in 2021 Symposium on VLSI Technology (13-06-2021)“…This work presents a qubit controller IC based on the direct synthesis. The IC consists of six independently-working pulse modulators utilizing the same LO…”
Get full text
Conference Proceeding -
20
Improving the accuracy of circuit quantization using the electromagnetic properties of superconductors
Published 31-10-2024“…Recent advances in quantum information processing with superconducting qubits have fueled a growing demand for scaling and miniaturizing circuit layouts…”
Get full text
Journal Article