9 citations · 50 across the 12 of their papers we have counts for
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Sign-switching of superexchange mediated by few electrons under non-uniform magnetic field
Guo Xuan Chan, Xin Wang
Long range interaction between distant spins is an important building block for the realization of large quantum-dot network in which couplings between pairs of spins can be select…
Theory on electron-phonon spin dehphasing in GaAs multi-electron double quantum dots
Guanjie He, Guo Xuan Chan, Xin Wang
Recent studies reveal that a double-quantum-dot system hosting more than two electrons may be superior in certain aspects as compared to the traditional case in which only two elec…
Universal control of superexchange in linear triple quantum dots with an empty mediator
Guo Xuan Chan, Peihao Huang, Xin Wang
Superexchange is one of the vital resources to realize long-range interaction between distant spins for large-scale quantum computing. Recent experiments have demonstrated coherent…
Microscopic theory on magnetic-field-tuned sweet spot of exchange interactions in multielectron quantum-dot systems
Guo Xuan Chan, Xin Wang
The exchange interaction in a singlet-triplet qubit defined by two-electron states in the double-quantum-dot system ("two-electron singlet-triplet qubit") typically varies monotoni…
Robust entangling gate for capacitively coupled few-electron singlet-triplet qubits
Guo Xuan Chan, Xin Wang
The search of a sweet spot, locus in qubit parameters where quantum control is first-order insensitive to noises, is key to achieve high-fidelity quantum gates. Efforts to search f…
Charge noise suppression in capacitively coupled singlet-triplet spin qubits under magnetic field
Guo Xuan Chan, Jason P. Kestner, Xin Wang
Charge noise is the main hurdle preventing high-fidelity operation, in particular that of two-qubit gates, of semiconductor-quantum-dot-based spin qubits. While certain sweet spots…
Suppression of leakage for a charge quadrupole qubit in triangular geometry
Guo Xuan Chan, Xin Wang
We present a simple yet effective strategy to suppress the leakage in the charge quadrupole qubit system by having the dots in a triangle as opposed to the linear geometry original…
Tunable charge qubit based on barrier-controlled triple quantum dots
Xu-Chen Yang, Guo Xuan Chan, Xin Wang
We present a theoretical proposal of a tunable charge qubit, hosted in triple quantum dots. The manipulation is solely performed by changing the heights of the two potential barrie…