3 papers
quant-ph2025
Bayesian and geometric analyses of power spectral densities of spin qubits in Si/SiGe quantum dot devices
Yujun Choi, Hruday Mallubhotla, Mark Friesen +2
Charge noise with a power-law spectrum poses a significant challenge to high-fidelity operation of spin qubits in semiconductor devices. Recently, considerable experimental work ch…
quant-ph2024
Using stochastic resonance of two-level systems to increase qubit decoherence times
Yujun Choi, S. N. Coppersmith, Robert Joynt
Two-level systems (TLS) are the major source of dephasing of spin qubits in numerous quantum computing platforms. In spite of much effort, it has been difficult to substantially mi…
cond-mat.mes-hall2024
Ballast charges for semiconductor spin qubits
Yujun Choi, John M. Nichol, Edwin Barnes
Semiconductor spin qubits are an attractive platform for quantum computing, but their performance is degraded primarily by fluctuating electromagnetic environments. We introduce th…