71 citations · 122 across the 4 of their papers we have counts for
4 papers
Application of polaron picture in the two-qubit quantum Rabi model
Xi-Mei Sun, Lei-Cong, Hans-Peter Eckle +2
The polaron picture is employed to investigate and elucidate the physics of the two-qubit quantum Rabi model, which describes two identical qubits coupled to a common harmonic osci…
Polaron picture of the two-photon quantum Rabi model
Lei Cong, Xi-Mei Sun, Maoxin Liu +2
We employ a polaron picture to investigate the properties of the two-photon quantum Rabi model (QRM), which describes a two-level or spin-half system coupled with a single bosonic…
Quantum phase transition and spontaneous symmetry breaking in a nonlinear quantum Rabi model
Zu-Jian Ying, Lei Cong, Xi-Mei Sun
The experimental advance on light-matter interaction into strong couplings has invalidated Jaynes-Cummings model and brought quantum Rabi model (QRM) to more relevance. The QRM onl…
Frequency-renormalized multipolaron expansion for the quantum Rabi model
Lei Cong, Xi-Mei Sun, Maoxin Liu +2
We present a frequency-renormalized multipolaron expansion method to explore the ground state of quantum Rabi model (QRM). The main idea is to take polaron as starting point to exp…