Hansub Hwang

Google Scholar: https://scholar.google.com/citations?user=8fA6TQsAAAAJ&hl=ko

ORCID: https://orcid.org/0009-0000-5925-4230

Educations

• PhD Candidate, Physics Department, Korea Advanced Institute of Science and Technology (2019~)
  
• Bachelor of Science, Physics Department, Konkuk University and Chemical Engineering Department, Konkuk University (2014~2019)
  

Reserch Experiences

Integrated Master's & Ph.D. Program Program: Quantum Computing Lab, KAIST. (2019~)

• Atom throw and catch by optical tweezer.
  
• Rydberg atom collision and dynamical Rydberg atom experiment.
  
• Design, implement, test, and maintain experimental systems.
  

Undergraduate Research Program: Undergraduate Intern, (Advisor Prof. Hoonkyung Lee). (2017~2019)

• DFT(density functional theory) research assistant School.

Teaching

Korea Advanced Institute of Science and Technology Teaching Assistant: 2023 Summer KAI-X Research Internship Program
Korea Advanced Institute of Science and Technology Teaching Assistant: ITB-KAIST Internship Program 2023
Teaching Assistant: Applied wave optics (PH 621-2020-3) (2020 Fall)
Teaching Assistant: General Physics 1 (PH 141(B)) (2019 Fall)
Teaching Assistant: General Physics 1 (PH 141(A)) (2019 Spring)

Publications

• Hansub Hwang, Andrew Byun, Juyoung Park, Sylvain de Léséleuc, and Jaewook Ahn, "Optical tweezers throw and catch single atoms," Optica 10 (3), 401-406 (2023)

• Y. Song, M. Kim, H. Hwang, W. Lee, and J. Ahn, “Quantum simulation of cayley-tree ising hamiltonianswith three-dimensional rydberg atoms,” Phys. Rev. R, vol. 3, 013286, 2021.

Conference presentations

• H. Hwang and J. Ahn,“Experimental demonstration of flying rydberg atom array,”in Korean Physical Society 2024 spring meeting, 2023.

• H. Hwang and J. Ahn, “Rydberg atom collision by optical tweezer accelerator,” in Korean Physical Society 2023 Spring meeting, 2023.

• H. Hwang, A. Byun, and J. Ahn, “Optical tweezers throw and catch single atoms,” in American Physical Society 2023 Fall meeting, 2023.

• H. Hwang, S. Hwang, and J. Ahn, “Rydberg atom collision by optical tweezer accelerator,” in Korean Physical Society 2023 fall meeting, 2023.

• H. Hwang, A. Byun, and J. Ahn, “Atom throw and catch,” in Korean Physical Society 2022 Fall meeting, 2022.

• H. Hwang, A. Byun, and J. Ahn, “Atom throw and catch,” in 2022 BrainLink conference, 2021.

• H. Hwang, A. Byun, and J. Ahn, “Eit cooling of atoms in optical dipole traps,” in Korean Physical Society 2021 Fall meeting G17.05, 2021.
• H. Hwang, A. Byun, and J. Ahn, “Eit cooling of atoms in optical dipole traps,” in Conference on Lasers and Electro-Optics(CLEO), 2021.

• H. Hwang, A. Byun, and J. Ahn, “Trapped atom cooling using electromagnetically-induced-transparency,” in Atomic and Molecular Physics Division Workshop, 2021.

Skills

AMO physics: Chamber bake out, generating optical tweezer, modulating optical tweezer, Rydberg atom excitation, multiple experience in measuring Resonance, Rabi oscillation and Ramsey experiment with Rydberg or ground state of neutral atom, modulate quantum state by modulating laser frequency or phase with RF device.

Laser: Laser tuning and stabilization, Generate and retrieve error signal from PDH cavity, Laser frequency locking with analog-digital error signal, assemble ECDL, Injection locking, Laser modulation by EOM, Maintaining laser condition, AOM and 2D-AOD align.

Hard-Software : Have experience in designing, implementing and testing Hardware(ex. OPX+, Arbitrary wave function generator, NI instrument) with optical system(ex. SLM, AOM, 2D-AOD, EMCCD etc ...).

Simulation: Have experience in simulating Rydberg atom Hamiltonian, qubit simulation while atom is flying, simulation of trapped atoms wavefunction.

Numerical simulation: Dynamics of Rydberg atoms under experimental noise, Quantum phase transition of Ising spins.

Programming language:

Matlab, C, C++, Labview, Python, Mathematica 

Language: Korean(Native), English(Intermediate)