Publications (22)
Long-range focusing of magnetic bound states in superconducting lanthanum
Howon Kim, Levente Rózsa, Dominik Schreyer +2
Quantum mechanical systems with long-range interactions between quasiparticles provide a promising platform for coherent quantum information technology. Superconductors are a natur…
Site-dependent evolution of electrical conductance from tunneling to atomic point contact
Howon Kim, Yukio Hasegawa
Using scanning tunneling microscopy (STM), we investigated the evolution of electrical conductance between a Pb tip and Pb(111) surface from tunneling to atomic point contact at a…
Proximity-induced superconductivity in a 2D Kondo lattice of an f-electron-based surface alloy
Howon Kim, Dirk K. Morr, Roland Wiesendanger
Realizing hybrids of low-dimensional Kondo lattices and superconducting substrates leads to fascinating platforms for studying the exciting physics of strongly correlated electron…
Disorder-induced suppression of superconductivity in the Si(111)-()-In surface: Scanning tunneling microscopy study
Shunsuke Yoshizawa, Howon Kim, Yukio Hasegawa +1
The critical effect of disorder on the two-dimensional (2D) surface superconductor Si(111)-()-In is clarified by comparing two regions with different degree…
Atomic-Scale Interface Engineering of Majorana Edge Modes in a 2D Magnet-Superconductor Hybrid System
Alexandra Palacio-Morales, Eric Mascot, Sagen Cocklin +4
Topological superconductors are predicted to harbor exotic boundary states - Majorana zero-energy modes - whose non-Abelian braiding statistics present a new paradigm for the reali…
Reducing the Depth of Quantum FLT-Based Inversion Circuit
Harashta Tatimma Larasati, Dedy Septono Catur Putranto, Rini Wisnu Wardhani +1
Works on quantum computing and cryptanalysis has increased significantly in the past few years. Various constructions of quantum arithmetic circuits, as one of the essential compon…
Behind The Wings: The Case of Reverse Engineering and Drone Hijacking in DJI Enhanced Wi-Fi Protocol
Derry Pratama, Jaegeun Moon, Agus Mahardika Ari Laksmono +5
This research paper entails an examination of the Enhanced Wi-Fi protocol, focusing on its control command reverse-engineering analysis and subsequent demonstration of a hijacking…
Dirac fermions in borophene
Baojie Feng, Osamu Sugino, Ro-Ya Liu +14
Honeycomb structures of group IV elements can host massless Dirac fermions with non-trivial Berry phases. Their potential for electronic applications has attracted great interest a…
ACTIVE: Towards Highly Transferable 3D Physical Camouflage for Universal and Robust Vehicle Evasion
Naufal Suryanto, Yongsu Kim, Harashta Tatimma Larasati +6
Adversarial camouflage has garnered attention for its ability to attack object detectors from any viewpoint by covering the entire object's surface. However, universality and robus…
Enhancement and termination of the superconducting proximity effect due to atomic-scale defects visualized by scanning tunneling microscopy
Howon Kim, Shi-Zeng Lin, Matthias J. Graf +2
Using low-temperature scanning tunneling microscopy and spectroscopy, we have studied the proximity effect at the interfaces between superconducting Pb island structures and metall…
Imaging Josephson Vortices on the Surface Superconductor Si(111)-(root7xroot3)-In using a Scanning Tunneling Microscope
Shunsuke Yoshizawa, Howon Kim, Takuto Kawakami +5
We have studied the superconducting Si(111)-(root7xroot3)-In surface using a 3He-based low-temperature scanning tunneling microscope (STM). Zero-bias conductance (ZBC) images taken…
Atomic-scale visualization of surface-assisted orbital order
Howon Kim, Yasuo Yoshida, Chi-Cheng Lee +6
Orbital-related physics attracts growing interest in condensed matter research, but direct real-space access of the orbital degree of freedom is challenging. Here we report a first…
DTA: Physical Camouflage Attacks using Differentiable Transformation Network
Naufal Suryanto, Yongsu Kim, Hyoeun Kang +6
To perform adversarial attacks in the physical world, many studies have proposed adversarial camouflage, a method to hide a target object by applying camouflage patterns on 3D obje…
Spectroscopic signature of the Stark-shifted Tamm-type surface state of La(0001)
Dominik Schreyer, Howon Kim, Roland Wiesendanger
We have studied the Tamm-type surface state of La(0001) by tunneling spectroscopy within a wide range of tunneling currents from 0.1 nA to 8000 nA, thereby tuning the electric-fiel…
MECHA: Multithreaded and Efficient Cryptographic Hardware Access
Pratama Derry, Laksmono Agus Mahardika Ari, Iqbal Muhammad +1
This paper presents a multithread and efficient cryptographic hardware access (MECHA) for efficient and fast cryptographic operations that eliminates the need for context switching…
Cityscape-Adverse: Benchmarking Robustness of Semantic Segmentation with Realistic Scene Modifications via Diffusion-Based Image Editing
Naufal Suryanto, Andro Aprila Adiputra, Ahmada Yusril Kadiptya +4
Recent advancements in generative AI, particularly diffusion-based image editing, have enabled the transformation of images into highly realistic scenes using only text instruction…
Quantum Circuit Designs of Point Doubling for Binary Elliptic Curves
Harashta Tatimma Larasati, Howon Kim
In the past years, research on Shor's algorithm for solving elliptic curves for discrete logarithm problems (Shor's ECDLP), the basis for cracking elliptic curve-based cryptosystem…
High-resolution spectroscopy of proximity superconductivity in finite-size quantized surface states
Lucas Schneider, Christian von Bredow, Howon Kim +4
Adding superconducting (SC) electron pairing via the proximity effect to pristinely non-superconducting materials can lead to a variety of interesting physical phenomena. Particula…
Anisotropic non-split zero-energy vortex bound states in a conventional superconductor
Howon Kim, Yuki Nagai, Levente Rózsa +2
Vortices in topological superconductors are predicted to host Majorana bound states (MBSs) as exotic quasiparticles. In recent experiments, the spatially non-split zero-energy vort…
CIPHER: Cybersecurity Intelligent Penetration-testing Helper for Ethical Researcher
Derry Pratama, Naufal Suryanto, Andro Aprila Adiputra +4
Penetration testing, a critical component of cybersecurity, typically requires extensive time and effort to find vulnerabilities. Beginners in this field often benefit from collabo…
Adversarial Manhole: Challenging Monocular Depth Estimation and Semantic Segmentation Models with Patch Attack
Naufal Suryanto, Andro Aprila Adiputra, Ahmada Yusril Kadiptya +2
Monocular depth estimation (MDE) and semantic segmentation (SS) are crucial for the navigation and environmental interpretation of many autonomous driving systems. However, their v…
Site-dependent conduction channel transmission in atomic-scale superconducting junctions
Howon Kim, Yukio Hasegawa
Using scanning tunneling microscopy, we reproducibly obtained electrical conductance spectra of superconductor- superconductor atomic point contacts formed on various atomic sites…