129 citations · 362 across the 18 of their papers we have counts for
9 papers · 1 filter
Waveguiding valley excitons in monolayer transition metal dicalcogenides by dielectric interfaces in the substrate
Xu-Chen Yang, Hongyi Yu, Wang Yao
In monolayers of the semiconducting transition metal dichalcogenides, the electron-hole exchange interaction splits the exciton dispersion into a massive transverse branch, and a l…
Chiral excitonics in monolayer semiconductors on patterned dielectric
Xu-Chen Yang, Hongyi Yu, Wang Yao
Monolayer transition metal dichalcogenides feature tightly bound bright excitons at the degenerate valleys, where electron-hole Coulomb exchange interaction strongly couples the va…
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…
Leakage and sweet spots in triple-quantum-dot spin qubits: A molecular-orbital study
Chengxian Zhang, Xu-Chen Yang, Xin Wang
A triple-quantum-dot system can be operated as either an exchange-only qubit or a resonant-exchange qubit. While it is generally believed that the decisive advantage of the resonan…
Fast pulse sequences for dynamically corrected gates in single-triplet qubits
Robert E. Throckmorton, Chengxian Zhang, Xu-Chen Yang +3
We present a set of experimentally feasible pulse sequences that implement any single-qubit gate on a singlet-triplet spin qubit and demonstrate that these new sequences are up to…
Magic angle for barrier-controlled double quantum dots
Xu-Chen Yang, Xin Wang
We show that the exchange interaction of a singlet-triplet spin qubit confined in double quantum dots, when being controlled by the barrier method, is insensitive to a charged impu…
Randomized benchmarking of barrier versus tilt control of a singlet-triplet qubit
Chengxian Zhang, Robert E. Throckmorton, Xu-Chen Yang +3
Decoherence due to charge noise is one of the central challenges in using spin qubits in semiconductor quantum dots as a platform for quantum information processing. Recently, it h…
Benchmarking of dynamically corrected gates for the exchange-only spin qubit in noise environment
Chengxian Zhang, Xu-Chen Yang, Xin Wang
We study theoretically the responses of the dynamically corrected gates to time-dependent noises in the exchange-only spin qubit system. We consider noises having spectra pro…
Noise filtering of composite pulses for singlet-triplet qubits
Xu-Chen Yang, Xin Wang
Semiconductor quantum dot spin qubits are promising candidates for quantum computing. In these systems, the dynamically corrected gates offer considerable reduction of gate errors…