265 citations · 2.1k across the 75 of their papers we have counts for
75 papers
Quantum phase transitions in the triangular coupled-top model
Liwei Duan, Yan-Zhi Wang, Qing-Hu Chen
We study the coupled-top model with three large spins located on a triangle. Depending on the coupling strength, there exist three phases: disordered paramagnetic phase, ferromagne…
Field-free superconducting diode in a magnetically nanostructured superconductor
Ji Jiang, M. V. Milošević, Yong-Lei Wang +3
A strong superconducting diode effect (SDE) is revealed in a thin superconducting film periodically nanostructured with magnetic dots. The SDE is caused by the current-activated di…
Implication of giant photon bunching on quantum phase transition in the dissipative anisotropic quantum Rabi model
Tian Ye, Chen Wang, Qing-Hu Chen
We investigate the quantum phase transition in the dissipative anisotropic quantum Rabi model in the framework of quantum dressed master equation. From perspectives of both numeric…
Comment on `Parameter-dependent unitary transformation approach for quantum Rabi model'
Daniel Braak, Murray T. Batchelor, Qing-Hu Chen
We discuss the elementary errors in D.G. Zhang's [New. J. Phys. 23, 093014 (2021)] claimed exact solution of the quantum Rabi model. The erroneous solution is seen to be nothing mo…
Quantum phase transition in the one-dimensional Dicke-Hubbard model with coupled qubits
Shu He, Li-Wei Duan, Yan-Zhi Wang +2
We study the ground state phase diagram of a one-dimensional two qubits Dicke-Hubbard model with XY qubit-qubit interaction. We use a numerical method combing the cluster mean-fiel…
Possibility of superradiant phase transitions in coupled two-level atoms
Tao Liu, Yu-Yu Zhang, Qing-Hu Chen +1
Although the oscillator strength sum rule forbids the phase transition in ideal non-interacting two-level atoms systems, we present the possibility of the quantum phase transition…