852 citations · 1.7k across the 15 of their papers we have counts for
15 papers
Non-Markovian dynamics of mixed-state geometric phase of dissipative qubits
Wei Guo, Jian Ma, Xiaolei Yin +2
We investigate the geometric phase of a two-level atom (qubit) coupled to a bosonic reservoir with Lorentzian spectral density, and find that for the non-Markovian dynamics in whic…
Quantum Fisher information and spin squeezing in one-axis twisting model
Wei Zhong, Jing Liu, Jian Ma +1
We consider the quantum Fisher information and spin squeezing in one-axis twisting model with a coherent spin state . We analytically discuss the dependence of…
Fisher information under decoherence in Bloch representation
Wei Zhong, Zhe Sun, Jian Ma +2
The dynamics of two variants of quantum Fisher information under decoherence are investigated from a geometrical point of view. We first derive the explicit formulas of these two q…
Photon-assisted Landau-Zener transition: Role of coherent superposition states
Zhe Sun, Jian Ma, Xiaoguang Wang +1
We investigate a Landau-Zener (LZ) transition process modeled by a quantum two-level system (TLS) coupled to a photon mode when the bias energy is varied linearly in time. The init…
Spin Squeezing under Non-Markovian Channels by Hierarchy Equation Method
Xiaolei Yin, Jian Ma, Xiaoguang Wang +1
We study spin squeezing under non-Markovian channels, and consider an ensemble of independent spin-1/2 particles with exchange symmetry. Each spin interacts with its own bath,…
Entanglement Dynamics of Two Qubits in a Common Bath
Jian Ma, Zhe Sun, Xiaoguang Wang +1
We derive a set of hierarchical equations for qubits interacting with a Lorentz-broadened cavity mode at zero temperature, without using the rotating-wave, Born, and Markovian appr…