Junki Kim

An elementary review on principles of qubits and their prospects for quantum computing is provided. Due to its rapid development, quantum computing has attracted considerable attention as a core technology for the next generation and has demonstrated its potential in simulations of exotic materials, molecular structures, and theoretical computer science. To achieve fully error-corrected quantum computers, building a logical qubit from multiple physical qubits is crucial. The number of physical q

Theories of democratic governance have undergone significant changes over the last two decades with the spread of ideas and popular practices associated with New Public Management (NPM) and New Governance. In particular, inter-ministerial and inter-societal networking is becoming important because of the capacity to regulate complex transactional interdependency in modern administrative states. This paper examined various forms of networks and identified factors that influence the form of govern

The morphology of heterostructured semiconductor nanocrystals (h-NCs) dictates the spatial distribution of charge carriers and their recombination dynamics and/or transport, which are the main performance indicators of photonic applications utilizing h-NCs. The inability to control the morphology of heterovalent III-V/II-VI h-NCs composed of heavy-metal-free elements hinders their practical use. As a case study of III-V/II-VI h-NCs, the growth control of ZnSe epilayers on InP NCs is demonstrated

Abstract The introduction of alkoxy side chains into the backbone of conjugated polymers is an effective way to change their properties. While the impact on the structure and optoelectronic properties of polymer thin films was well‐studied in organic solar cells and transistors, limited research has been conducted on their effects on doping and thermoelectric properties. In this study, the effects of methoxy functionalization of conjugated backbones on the doping and thermoelectric properties ar

This paper argues that Korea, which has long been dominated by the state in many facets of its socio-economic and political activity, is undergoing a fundamental change from a ‘developmental state’ to a ‘third party government, ’ and the pace of the transformation has quickened since the economic crisis of 1997. Distinguishing features of this transformation have been the pervasive sharing of responsibility for the delivery of publicly-financed services and the exercise of governmental authority

In this study, we investigated the optical properties of a transition metal dichalcogenide (TMD) substrate via Mie-scattering-induced surface analysis (MISA). Employing near-field optical microscopy and finite-difference time-domain (FDTD) simulations, we systemically prove and directly visualize the Mie scattering of superspherical gold nanoparticles (s-AuNPs) at the nanoscale. Molybdenum disulfide substrates exhibited optical isotropy, while rhenium disulfide (ReS 2 ) substrates showed anisotr

The role and legitimacy of quasi-governmental agencies in the modern governance has long been a contentious issue in public administration. In this paper, I examined various types of quasi-governmental institutions that exist in Korea and analyzed their unique characteristics. It was found that four different types of quasi-governmental agencies were employed, mainly for policy implementation purposes for government ministries. When choosing among various institutional forms to perform certain p

In April 2001, the generation unit of Korea Electric Power Corporation (KEPCO) was split into six subsidiary companies with further plans for privatization. But, the process of privatization has ceased due to changes in political environment. This study analyzes the performance of the restructuring of generation units using financial and physical indices. The results from the analysis also show that the restructuring has had positive effect on their performance. The financial indices of the gene

We present a practical laser linewidth broadening phenomenon in the viewpoint of high sensitivity of an exceptional point (EP). A stochastic simulation model is implemented to describe the fluctuations in the cavity resonance frequencies. The linewidth originated from external noises are maximized at the EP. The linewidth enhancement factor behaves similarly to the Petermann factor although the Petermann effect is not considered. In the long coherence time limit, the power spectral density of th