481 citations · 3.6k across the 82 of their papers we have counts for
11 papers · 1 filter
Cyclotron dynamics of a Bose-Einstein condensate in a quadruple-well potential with synthetic gauge fields
Wen-Yuan Wang, Ji Lin, Jie Liu
We investigate the cyclotron dynamics of Bose-Einstein condensate (BEC) in a quadruple-well potential with synthetic gauge fields. We use laser-assisted tunneling to generate large…
Interfacing a topological qubit with a spin qubit in a hybrid quantum system
Bo Li, Peng-Bo Li, Yuan Zhou +3
We present and analyze a hybrid quantum system that interfaces a Majorana-hosted semiconductor nanowire with a single nitrogen-vacancy (NV) center via a magnetized torsional cantil…
Comparison of quantum kinetic theory and time-dependent Dirac equation approaches in vacuum pair production and the bound states resonance enhanced mechanism
Qiang Wang, Li-Bin Fu, Jie Liu
A remarkable quantitative agreement is found between the non-Markovian quantum kinetic approach and the time-dependent Dirac equation approach for a large region of Keldysh paramet…
Pump Electron-Positron Pairs from Potential Well
Qiang Wang, Jie Liu, Li-Bin Fu
In this paper we show that electron-positron pairs can be pumped inexhaustibly with a constant production rate from the one dimensional potential well with oscillating depth or wid…
Enhanced correlation of electron-positron pair in the two and three dimensions
Suo Tang, Bai-Song Xie, Hong-Yu Wang +3
Early-time electron-positron correlation in vacuum pair-production in an external field is investigated. The entangled electron and positron wave functions are obtained analyticall…
Stability of Fock states in a two-component Bose-Einstein condensate with a regular classical counterpart
Wen-ge Wang, Jie Liu, Baowen Li
We study the stability of a two-component Bose-Einstein condensate (BEC) in the parameter regime in which its classical counterpart has regular motion. The stability is characteriz…
Singularity of Berry Connections Inhibits the Accuracy of Adiabatic Approximation
Jie Liu, Li-Bin Fu
Adiabatic approximation for quantum evolution is investigated quantitatively with addressing its dependence on the Berry connections. We find that, in the adiabatic limit, the adia…
Adiabatic Geometric Phase for a General Quantum States
Biao Wu, Jie Liu, Qian Niu
A geometric phase is found for a general quantum state that undergoes adiabatic evolution. For the case of eigenstates, it reduces to the original Berry's phase. Such a phase is ap…
Adiabatic Theory of Nonlinear Evolution of Quantum States
Jie Liu, Biao Wu, Qian Niu
We present a general theory for adiabatic evolution of quantum states as governed by the nonlinear Schrodinger equation, and provide examples of applications with a nonlinear tunne…
Theory of nonlinear Landau-Zener tunneling
Jie Liu, Li-Bin Fu, Bi-Yiao Ou +2
A nonlinear Landau-Zener model was proposed recently to describe, among a number of applications, the nonadiabatic transition of a Bose-Einstein condensate between Bloch bands. Num…
Nonadiabatic geometric phase for the cyclic evolution of a time-dependent Hamiltonian system
Jie Liu, Bambi Hu, Baowen Li
The geometric phases of the cyclic states of a generalized harmonic oscillator with nonadiabatic time-periodic parameters are discussed in the framework of squeezed state. It is sh…