59 citations · 234 across the 7 of their papers we have counts for
7 papers
Anisotropic Pauli Spin Blockade of Holes in a GaAs Double Quantum Dot
Daisy Q. Wang, Oleh Klochan, Jo-Tzu Hung +4
Electrically defined semiconductor quantum dots are attractive systems for spin manipulation and quantum information processing. Heavy-holes in both Si and GaAs are promising candi…
Spin blockade as a probe of Zeeman interactions in hole quantum dots
Jo-Tzu Hung, Elizabeth Marcellina, Bin Wang +2
Spin-orbit coupling is key to all-electrical control of quantum-dot spin qubits, and is frequently stronger for holes than for electrons. Here we investigate Pauli spin blockade fo…
Characterizing gate operations near the sweet spot of an exchange-only qubit
Jianjia Fei, Jo-Tzu Hung, Teck Seng Koh +4
Optimal working points or "sweet spots" have arisen as an important tool for mitigating charge noise in quantum dot logical spin qubits. The exchange-only qubit provides an ideal s…
Decoherence of an exchange qubit by hyperfine interaction
Jo-Tzu Hung, Jianjia Fei, Mark Friesen +1
We study three-electron-spin decoherence in a semiconductor triple quantum dot with a linear geometry. The three electron spins are coupled by exchange interactions J_{12} and J_{2…
Hyperfine interaction induced dephasing of coupled spin qubits in semiconductor double quantum dots
Jo-Tzu Hung, Łukasz Cywiński, Xuedong Hu +1
We investigate theoretically the hyperfine-induced dephasing of two-electron-spin states in a double quantum dot with a finite singlet-triplet splitting J. In particular, we derive…
Dynamical Decoupling of Qubits in Spin Bath under Periodic Quantum Control
Jun-Ting Kao, Jo-Tzu Hung, Pochung Chen +1
We investigate the feasibility for the preservation of coherence and entanglement of one and two spin qubits coupled to an interacting quantum spin-1/2 chain within the dynamical d…
Induced decoherence and entanglement by interacting quantum spin baths
Cheng-Yan Lai, Jo-Tzu Hung, Chung-Yu Mou +1
The reduced dynamics of a single or two qubits coupled to an interacting quantum spin bath modeled by a XXZ spin chain is investigated. By using the method of time-dependent densit…