21 citations · 33 across the 3 of their papers we have counts for
8 papers · 1 filter
Quantum Geometric Tensor and Critical Metrology in the Anisotropic Dicke Model
Xin Zhu, Jia-Hao Lü, Wen Ning +3
We investigate the quantum phase transition in the anisotropic Dicke model through an examination of the quantum geometric tensor of the ground state. In this analysis, two distinc…
Quantum metric and metrology with parametrically-driven Tavis-Cummings models
Jia-Hao Lü, Pei-Rong Han, Wen Ning +5
We study the quantum metric in a driven Tavis-Cummings model, comprised of multiple qubits interacting with a quantized photonic field. The parametrical driving of the photonic fie…
Robust single-qubit gates by composite pulses in three-level systems
Zhi-Cheng Shi, Hai-Ning Wu, Li-Tuo Shen +3
Composite pulses are an efficient tool for robust quantum control. In this work, we derive the form of the composite pulse sequence to implement robust single-qubit gates in a thre…
Manifestation of classical nonlinear dynamics in optomechanical entanglement with a parametric amplifier
Chang-Sheng Hu, Li-Tuo Shen, Zhen-Biao Yang +3
Cavity optomechanical system involving an optical parametric amplifier (OPA) can exhibit rich classical and quantum dynamical behaviors. By simply modulating the frequency of the l…
Generation and stabilization of entangled coherent states for the vibrational modes of a trapped ion
Zhi-Rong Zhong, Xin-Jie Huang, Zhen-Biao Yang +2
We propose a scheme for preparation of entangled coherent states for the motion of an ion in a two-dimensional anisotropic trap. In the scheme, the ion is driven by four laser beam…
Quantum state engineering by periodical two-step modulation in atomic system
Zhi-Cheng Shi, Du Ran, Li-Tuo Shen +2
By periodical two-step modulation, we demonstrate that the dynamics of multilevel system can still evolve even in multiple large detunings regime, and provide the effective Hamilto…