31 citations · 68 across the 9 of their papers we have counts for
9 papers
Effective tuning methods for few-electron regime in gate-defined quantum dots
Chanuk Yang, Hwanchul Jung, Hyung Kook Choi +1
We present systematic methods for compensating gate crosstalk effects in gate-defined quantum dots (QDs), to allow the observation of Coulomb blockade peaks from the few-electron r…
True decoherence-free-subspace derived from a semiconductor double quantum dot Heisenberg spin-trimer
Wonjin Jang, Jehyun Kim, Jaemin Park +6
Spins in solid systems can inherently serve as qubits for quantum simulation or quantum information processing. Spin qubits are usually prone to environmental magnetic field fluctu…
Observation of Electronic Modes in Open Cavity Resonator
Hwanchul Jung, Dongsung T. Park, Seokyeong Lee +9
The resemblance between electrons and optical waves has strongly driven the advancement of mesoscopic physics. However, electron waves have yet to be understood in open cavity stru…
Wigner-molecularization-enabled dynamic nuclear field programming
Wonjin Jang, Jehyun Kim, Jaemin Park +8
Multielectron semiconductor quantum dots (QDs) provide a novel platform to study the role of Coulomb correlations in finite quantum systems and their impact on many-body energy spe…
Probing two-qubit capacitive interactions beyond bilinear regime using dual Hamiltonian parameter estimations
Jonginn Yun, Jaemin Park, Hyeongyu Jang +8
We report the simultaneous operation and two-qubit coupling measurement of a pair of two-electron spin qubits that are actively decoupled from quasistatic nuclear noise in a GaAs q…
Approaching ideal visibility in singlet-triplet qubit operations using energy-selective tunneling-based Hamiltonian estimation
Jehyun Kim, Jonginn Yun, Wonjin Jang +9
We report energy selective tunneling readout-based Hamiltonian parameter estimation of a two-electron spin qubit in a GaAs quantum dot array. Optimization of readout fidelity enabl…
Single-shot readout of a driven hybrid qubit in a GaAs double quantum dot
Wonjin Jang, Min-Kyun Cho, Hyeongyu Jang +7
We report a single-shot-based projective readout of a semiconductor hybrid qubit formed by three electrons in a GaAs double quantum dot. Voltage-controlled adiabatic transitions be…
Ultrafast energy relaxation of quantum dot-generated 2D hot electrons
Dongsung T. Park, Dongkun Kim, Uhjin Kim +8
Through a series of transverse magnetic focusing experiments, we show that hot electrons in a two-dimensional electron gas system undergo an ultrafast relaxation when generated by…
Fast raster scan multiplexed charge stability measurements toward high-throughput quantum dot array calibration
Wonjin Jang, Min-Kyun Cho, Myungwon Lee +6
We report raster scan multiplexed charge-stability diagram measurements for tuning multiple gate-defined quantum dots in GaAs/AlGaAs heterostructures. We evaluate the charge sensit…