Yunheung Song

EDUCATION

M.S.-Ph.D. integrated program in Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea (March 2014 ~ February 2020)

• Thesis: Ultrafast quantum gates for trapped neutral atom qubits (advisor: Jaewook Ahn)

B.S. in Physics, Hanyang University, Seoul, Korea (March 2010 ~ February 2014)

• summa cum laude with top honor
• Member of Honors Program (full scholarship)
• Thesis: A division approach to generalize Bell's inequalities for arbitrary systems (advisor: Jinhyoung Lee)

RESEARCH EXPERIENCE

Postdoctoral research associate, KAIST Ultrafast Quantum Optics Laboratory, Daejeon, Korea (February 2020 ~ )

• Many-body ground-state preparations in a Rydberg quantum simulator

M.S.-Ph.D. integrated program, KAIST Ultrafast Quantum Optics Laboratory, Daejeon, Korea (August 2014 ~ February 2020)

• Rydberg and Ultrafast quantum gates for trapped neutral-atom qubits, Ultrafast coherent control of atomic systems

Undergraduate research assistant, Quantum Information Group at Hanyang University, Seoul, Korea (March 2012 ~ February 2014)

• Generalization of Bell's inequality for multi-dimensional and multi-partite systems

TEACHING & TUTORING

Teaching assistant, Applied Physics Lab. I, Dept. of Physics, KAIST (Fall 2016).
Teaching assistant, Applied Physics Lab. I, Dept. of Physics, KAIST (Spring 2016).
Teaching assistant, General Physics II, Dept. of Physics, KAIST (Fall 2014).
Teaching assistant, General Physics I, Dept. of Physics, KAIST (Summer 2014).

PUBLICATIONS

Yunheung Song, Jongseok Lim, and Jaewook Ahn, "Berry-phase gates for fast and robust control of atomic clock states," Physical Review Research 2, 023045 (2020).

Hanlae Jo, Yunheung Song, Minhyuk Kim, and Jaewook Ahn, "Rydberg Atom Entanglements in the Weak Coupling Regime," Physical Review Letters 124, 033603 (2020).

Woojun Lee, Minhyuk Kim, Hanlae Jo, Yunheung Song, and Jaewook Ahn, "Coherent and dissipative dynamics of entangled few-body systems of Rydberg atoms," Physical Review A 99, 043404 (2019).

Hanlae Jo, Yunheung Song, and Jaewook Ahn, "Qubit leakage suppression by ultrafast composite pulses," Optics Express 27(4), 3944 (2019).

Waranont Anukool, Jongseok Lim, Yunheung Song, and Jaewook Ahn, "Quantum computing systems: a brief overview," Journal of Korean Physical Society 73 (50th Anniversary Special Issue), 841 (2018).

Yunheung Song, Han-gyeol Lee, Hyosub Kim, Hanlae Jo, and Jaewook Ahn, "Subpicosecond X rotations of atomic clock states," Physical Review A 97, 052322 (2018).

Han-gyeol Lee, Yunheung Song, and Jaewook Ahn, "Single-laser-pulse implementation of arbitrary ZYZ rotations of an atomic qubit," Physical Review A 96, 012326 (2017).

Hyosub Kim, Woojun Lee, Han-gyeol Lee, Hanlae Jo, Yunheung Song, and Jaewook Ahn, "In situ single-atom array synthesis using dynamic holographic optical tweezers," Nature Communications 7, 13317 (2016).

Daehoon Han, Kanghee Lee, Hanlae Jo, Yunheung Song, Minhyuk Kim, and Jaewook Ahn, "Terahertz polarization spectroscopy in the near-field zone of a sub-wavelength metal slit," Optics Express 24(19), 21276-21285 (2016).

Yunheung Song, Han-gyeol Lee, Hanlae Jo, and Jaewook Ahn, "Selective excitation in a three-state system using a hybrid adiabatic-nonadiabatic interaction", Physical Review A 94, 023412 (2016).

Han-gyeol Lee, Yunheung Song, Hyosub Kim, Hanlae Jo, and Jaewook Ahn, "Quantum dynamics of a two-state system induced by a chirped zero-area pulse," Physical Review A 93, 023423 (2016).

Daehoon Han, Heejae Jeong, Yunheung Song, Jai Seok Ahn, and Jaewook Ahn, "Lattice vibrations of natural seraphinite gemstone probed by terahertz time-domain spectroscopy," IEEE Transactions on Terahertz Science and Technology 5, 1021 (2015).

Hyosub Kim, Yunheung Song, Han-gyeol Lee, and Jaewook Ahn, "Rabi oscillations of Morris-Shore transformed N-state systems by elliptically polarized ultrafast laser pulses," Physical Review A 91, 053421 (2015).

CONFERENCE PRESENTATIONS

Yunheung Song, Andrew Byun and Jaewook Ahn, "Multi-qubit adiabatic evolutions by parameter jumping in Rydberg-atom programmable quantum simulators," S06.00007, DAMOP 2020 (virtual), June 1-5 (2020).

Yunheung Song and Jaewook Ahn, "Dynamically decoupled adiabatic passage for robust Rydberg qubit excitation," E6.07, 2019 KPS Fall meeting, Gwangju, South Korea, October 23-25 (2019).

Yunheung Song and Jaewook Ahn, "Atomic Ramsey interferometry with ultrafast holonomic gates," D5.02, 2018 KPS Fall Meeting, Changwon, South Korea, October 24-26 (2018).

Yunheung Song, Hanlae Jo, Han-gyeol Lee, Geol Moon, Jaewook Ahn, "Ultrafast Rabi and Ramsey measurements with reconfigurable single-atom tweezer traps," FM2H.7, CLEO 2018, San Jose, CA, USA, May 13-18 (2018).

Yunheung Song and Jaewook Ahn, "Ultrafast adiabatic holonomic gates for atomic clock state qubits in tweezer trap array," F11-at.02, 2018 KPS Spring Meeting, Daejeon, South Korea, April 25-27 (2018).

Yunheung Song, Han-gyeol Lee, Hanlae Jo, Hyosub Kim, Geol Moon, and Jaewook Ahn, "Ultrafast control of single-atom qubit in tweezer trap array," P1-at.005, 2017 KPS Fall Meeting, Gyeongju, South Korea, October 25-27 (2017).

Yunheung Song, Han-gyeol Lee, Hyosub Kim, Hanlae Jo, and Jaewook Ahn, "Quantum gate for atomic hyperfine qubit in femtosecond time scale," Poster presentations, ICSSUR 2017, Jeju, South Korea, August 28-September 1 (2017).

Yunheung Song, Han-gyeol Lee, Hyosub Kim, Hanlae Jo, and Jaewook Ahn, "Ultrafast time scale X-rotation of cold atom storage qubit using Rubidium clock states," U6.00006, DAMOP 2017, Sacramento, CA, USA, June 5-9 (2017).

Yunheung Song, Han-gyeol Lee, Hyosub Kim, Hanlae Jo, and Jaewook Ahn, "Local operation of cold atomic qubit in hyperfine states implemented with ultrafast laser pulses," D12.04, 2017 KPS spring meeting, Daejeon, South Korea, April 19-21 (2017).

Yunheung Song, Han-gyeol Lee, Hanlae Jo, and Jaewook Ahn, "Selective excitation of V-type quantum system by controlled rapid adiabatic passage," Thu-083, ICAP 2016, Seoul, South Korea, July 24-29 (2016).

Yunheung Song, Han-gyeol Lee, Hanlae Jo, and Jaewook Ahn, "Controlled Rapid Adiabatic Passage in a V-Type System," P9.00005, DAMOP 2016, Providence, RI, USA, May 23-27 (2016).

HONORS & AWARDS

Pre-doctoral fellow of physics at KAIST, department of physics, KAIST (2019).

Dean's prize at graduation ceremony, college of natural science, Hanyang University (2014).

SKILLS

Optics & optoelectronics for atomic physics, Cold atom & single atom trapping, Ultrafast laser oscillator & amplifier, Pulse shaping, MATLAB, Labview, C

Korean (native), English