68 citations · 118 across the 8 of their papers we have counts for
8 papers
A new method for driven-dissipative problems: Keldysh-Heisenberg equations
Yuanwei Zhang, Gang Chen
Driven-dissipative systems have recently attracted great attention due to the existence of novel physical phenomena with no analog in the equilibrium case. The Keldysh path-integra…
Superfluid-Mott-insulator phase transition of light in a two-mode cavity array with ultrastrong coupling
Jingtao Fan, Yuanwei Zhang, Lirong Wang +3
In this paper we construct a new type of cavity array, in each cavity of which multiple two-level atoms interact with two independent photon modes. This system can be totally gover…
Steady-state localized-delocalized phase transition of an incoherent-pumped dissipative Bose-Hubbard model
Yuanwei Zhang, Jingtao Fan, Gang Chen +1
We investigate steady-state properties of a two-dimensional incoherent-pumped dissipative Bose-Hubbard model, which describes a photon square lattice. This incoherent pumping exhib…
Photon Devil's staircase: photon long-range repulsive interaction in lattices of coupled resonators with Rydberg atoms
Yuanwei Zhang, Jingtao Fan, J. -Q. Liang +4
The realization of strong coherent interactions between individual photons is a long-standing goal in science and engineering. In this report, based on recent experimental setups,…
Quantum phases in circuit QED with a superconducting qubit array
Yuanwei Zhang, Lixian Yu, J. -Q. Liang +3
Circuit QED on a chip has become a powerful platform for simulating complex many-body physics. In this report, we realize a Dicke-Ising model with an antiferromagnetic nearest-neig…
Thermodynamics of spin-orbit-coupled Bose-Einstein condensates
Jinling Lian, Yuanwei Zhang, J. -Q. Liang +3
In this paper we develop a quantum field approach to reveal the thermodynamic properties of the trapped BEC with the equal Rashba and Dresselhaus spin-orbit couplings. In the exper…
Finite temperature Dicke phase transition of a Bose-Einstein condensate in an optical cavity
Yuanwei Zhang, Jinling Lian, J. -Q. Liang +3
Dicke model predicts a quantum phase transition from normal to superradiant phases for a two-level atomic ensemble coupled with an optical cavity at zero temperature. In a recent p…
Macroscopic Quantum States and Quantum Phase Transition in Dicke Models of Arbitrary Atom-Number
Jinling Lian, Yuanwei Zhang, J. -Q. Liang
The energy spectrum of Dicke Hamiltonians with and without the rotating wave approximation for arbitrary atom-number is obtained analytically with the variational method, in which…