31 citations · 73 across the 11 of their papers we have counts for
8 papers · 1 filter
Probing Residual Noise at a Decoherence Sweet Spot in a Si/SiGe Spin Qubit
Shinwoo Lee, Hanseo Sohn, Jaemin Park +7
In Si/SiGe spin qubits with micromagnets, the longitudinal stray field gradient transduces charge noise into qubit frequency noise and limits coherence. We compare two neigh…
Feedback stabilization of multi-qubit Hamiltonian parameters enabled by single-shot measurement-based sequential Monte Carlo
Hyeongyu Jang, Jaemin Park, Younguk Song +6
Fast measurement, signal processing, and accurate estimation of Hamiltonian parameters are essential for feedback control in quantum-classical interface circuitry. However, existin…
Highly Tunable Two-Qubit Interactions in Si/SiGe Quantum Dots by Interchanging the Roles of Qubit-Defining Gates
Jaemin Park, Hyeongyu Jang, Hanseo Sohn +5
Silicon quantum dot spin qubits have become a promising platform for scalable quantum computing because of their small size and compatibility with industrial semiconductor manufact…
Application of zero-noise extrapolation-based quantum error mitigation to a silicon spin qubit
Hanseo Sohn, Jaewon Jung, Jaemin Park +5
As quantum computing advances towards practical applications, reducing errors remains a crucial frontier for developing near-term devices. Errors in the quantum gates and quantum s…
Passive and active suppression of transduced noise in silicon spin qubits
Jaemin Park, Hyeongyu Jang, Hanseo Sohn +7
Addressing and mitigating decoherence sources plays an essential role in the development of a scalable quantum computing system, which requires low gate errors to be consistently m…
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…