Skip to content
View justinbrianhwang's full-sized avatar

Block or report justinbrianhwang

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Content in all repositories owned by your account will be closed.
Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
justinbrianhwang/README.md

Sunjun Hwang

Sunjun Hwang - Quantum & AI & Autonomous Driving

Researcher Β β€”Β  Quantum Computing Β· AI Security Β· Systems & Compilers
B.S. in Software, Yonsei University Β Β·Β  currently at ILSC Vancouver Campus, Canada

My core is quantum computing β€” NISQ-era circuits, variational quantum classifiers, and the security of BB84 key distribution. Around that core I work on what makes any intelligent system trustworthy and deployable: adversarial robustness and federated learning security, autonomous driving reliability, and the FPGA and compiler layers that actually run these models.

Currently seeking an integrated MS–PhD position in quantum computing.

Portfolio Research Wiki CV Google Scholar ORCID

Email LinkedIn YouTube Medium Instagram


Research Areas

Quantum computing is the core. The surrounding areas are where I test whether those ideas survive contact with real systems.

Research areas overview

Quantum Computing & Communication

Quantum algorithms, NISQ-era circuits, and variational quantum classifiers. Quantum key distribution via the BB84 protocol and quantum-secured hybrid communication systems.

Quantum ML Β· VQC Β· BB84 Β· PennyLane Β· Qiskit

AI Security

Attack and defense techniques for reliable, safe AI systems β€” adversarial robustness, federated learning security, post-hoc defense, and fault injection.

Adversarial Attack Β· FL Security Β· Fault Injection Β· Trustworthy AI

Autonomous Driving

Autonomous driving systems built on Federated Learning and Large Language Models. Optimizing FL across heterogeneous and homogeneous models in diverse driving environments.

Federated Learning Β· LLM Β· Autonomous Driving Β· Simulation

AI Semiconductors

Design and implementation of real-time AI systems on FPGA, AI accelerators, and neuromorphic computing architectures. Hardware-optimized voice risk detection systems.

FPGA Β· AI Accelerator Β· Neuromorphic Β· CUDA

Medical AI

AI in healthcare β€” pneumonia classification from chest X-rays, federated learning for medical imaging, and hybrid quantum-classical classification with privacy preservation.

Medical Imaging Β· Chest X-ray Β· Federated Learning Β· Privacy

Network & Communication Security

Adversarial robustness analysis of Automatic Modulation Classification in wireless communication. Quantum-secured communication systems for tactical military networks.

AMC Β· Wireless Security Β· Tactical Network Β· Quantum Security

Computer Vision

Visual understanding β€” object detection, semantic and instance segmentation, 3D reconstruction, and generative models for image synthesis and style transfer.

Object Detection Β· Segmentation Β· 3D Vision Β· Image Generation

Robotics

Intelligent robotic systems β€” motion planning, dexterous manipulation, sim-to-real transfer learning, and multi-agent coordination for collaborative tasks.

Motion Planning Β· Manipulation Β· Sim-to-Real Β· Multi-Agent

Large Language Models

LLM capabilities β€” prompt engineering, fine-tuning, retrieval-augmented generation, multi-modal LLMs, and alignment for safe and reliable AI systems.

Prompt Engineering Β· Fine-tuning Β· RAG Β· Multi-modal Β· Alignment

Compilers

AI/ML compilers (TVM / XLA / MLIR-style graph optimization), hardware-aware compilation for FPGA, GPU, and NPU backends, quantum circuit compilation for NISQ devices, and classical compiler and PL theory on LLVM.

AI/ML Compiler Β· Hardware-aware Β· Quantum Compiler Β· LLVM / PL


Selected Projects

Quantum Computing & Communication

Project Focus
SCATTER Information-theoretic bounds on telemetry-based intrusion detection in decoy-state BB84 QKD, and the DEGENERACY attack that steals the key while hiding in cheap telemetry.
TRACE Sequential attribution of eavesdropping versus natural noise in BB84 β€” identifiability limits, robust change-point detection, and security-preserving operation.
PHOTON Research-grade BB84 QKD simulator with a C++ server, Qt6 dashboard, and Python client SDK.
qfilter Quantum Filter Zoo β€” quanvolution, QPF, and PQC convolution layers for PyTorch, built on PennyLane.
qfz-de Dequantization-aware benchmark of fixed quantum filter stems for low-data chest X-ray object detection on RSNA and VinDr-CXR.

Autonomous Driving

Project Focus
MARSHAL Closed-loop CARLA benchmark for authority-aware driving: does the model obey a human traffic director when the directive overrides the traffic rule?
SD2 System Deviation Diagnosis β€” decomposes the end-to-end driving pipeline and localizes where robustness first collapses under stress.
TORSION Injects contract-preserving faults as excitation signals to identify which representation boundaries amplify errors into safety failures.
OpenEMMA-UI Real-time VLM-driven driving UI for CARLA, with Chain-of-Thought reasoning and multi-model vision-language backends.

AI Security & Federated Learning

Project Focus
TopoTrace Oracle-calibrated topological auditing of machine unlearning: does forgotten data leave a persistent-homology trace in the representation space?
FALCON Failure attribution in federated learning β€” localizes which pipeline stage originated a failure via matched record-replay and causal interventions.
UA-D2OFL When does reliability-weighted multi-teacher distillation help diffusion-assisted one-shot federated learning?
fl-datafree-backdoor-detection Data-free backdoor detection in federated learning via reverse engineering.

Medical AI

Project Focus
CDG-QGAN Plants a clinical dependency graph into the entanglement topology of a shallow quantum circuit to generate synthetic MIMIC-IV ICU data.
chestxray-federated-learning Federated learning experiments on the NIH Chest X-ray14 dataset, with reproducible scripts and a local launcher.

Robotics & Systems

Project Focus
Robot_LLM Dexterous pick-and-place with a Franka arm and LEAP hand in MuJoCo β€” hardcoded control versus a local Qwen2.5-VL policy.
andamento Budgeted autotuning of Pallas TPU kernels: how close to the exhaustive optimum can you get with 20–100 real measurements?

Experience & Education

Research

Period Role
Dec 2024 – Present Undergraduate Researcher, RAISE Lab β€” Reliable AI, System Engineering & Quantum Computing, Yonsei University. Advised by Professor Ko.

Designing algorithms for AI reliability and interpretability, integrating reliability frameworks into models to improve robustness and trustworthiness, and working on interdisciplinary projects that bring quantum mechanics principles into computational engineering. Findings presented at lab seminars.

Teaching

Teaching assistant and tutor, Yonsei University.

Period Course
Mar – Jun 2026 Artificial Intelligence Mathematics
Sep – Dec 2025 Artificial Intelligence
Mar – Jun 2025 Engineering Mathematics (I)
Mar – Jun 2025 Calculus & Vector Analysis (I)
Sep – Dec 2024 Java Programming

Education

Period Institution
Sep 2026 – Apr 2027 ILSC Language Schools, Vancouver, Canada
Mar 2022 – Aug 2026 B.S. in Software, Yonsei University β€” coursework across computer science (AI) and physics (quantum mechanics)
Mar 2018 – Feb 2021 Cheongdam High School, Seoul
Mar 2015 – Feb 2018 Bongeun Middle School, Seoul
Mar 2009 – Feb 2015 Eonbuk Elementary School, Seoul
Relevant coursework and school activities

Yonsei University β€” relevant coursework

Course Focus
Artificial Intelligence Supervised and unsupervised learning, neural networks, and real-world applications.
Natural Language Processing Linguistic structures, sentiment analysis, sequence-to-sequence models, text classification, and machine translation.
Quantum Mechanics Foundations of quantum theory with applications to quantum computing.
Computer Architecture System design, memory management, and processing units.
Operating Systems Process management, memory allocation, and file systems.
Data Mining Techniques for extracting knowledge and patterns from large datasets.
Software Engineering Design patterns, development methodologies, and team-based projects.
Mathematics Advanced concepts essential for computational modeling and algorithm development.

ILSC Language Schools β€” Intensive English program covering academic English, professional communication, and cross-cultural collaboration.

Cheongdam High School β€” Class President for all three years. Computer club "Shift" deputy (2018), then president (2019). Science Golden Bell Grand Prize and Subject Excellence in Integrated Science. Volunteering across multicultural tutoring, coding education, and community service.

Bongeun Middle School β€” Robotics, environmental science, and sports clubs, 271 hours in total.

Eonbuk Elementary School β€” Reading Award for four consecutive years (grades 1–4), plus awards in English, research presentation, and family newspaper contests.


Technical Stack

Languages

C C++ C# Python Java Rust R Assembly Shell

Machine Learning & Data

PyTorch TensorFlow Keras scikit-learn NumPy pandas Matplotlib Seaborn

Quantum

Qiskit PennyLane IBM Quantum

Systems & Hardware

CUDA LLVM FPGA Linux Docker Git

Simulation & Graphics

PyBullet OpenCV SFML

Web

HTML5 CSS3 JavaScript JSP


Contribution Activity

Contribution graph

Pinned Loading

  1. justinbrianhwang justinbrianhwang Public

    Config files for my GitHub profile.

    2