72 citations · 936 across the 41 of their papers we have counts for
41 papers
Probing Lorentz-invariance-violation with quantum coherence of Unruh-DeWitt detector
Yihao Wu, Xiaobao Liu, Zehua Tian
Testing Lorentz invariance violation (LIV) is notoriously difficult, as its characteristic energy scale, , in modified dispersion relations typically lies beyond current e…
Stronger Entanglement Dies Faster: Quantum Mpemba Effect in Dissipative Qubits
Zhilong Liu, Zehua Tian, Jieci Wang
In classical thermodynamics, the Mpemba effect refers to the counterintuitive observation that hot water can freeze faster than cold water, manifesting as an anomalous crossing of…
Escape of quantum information across an analogue black hole horizon
Zhilong Liu, Wentao Liu, Zehua Tian +1
The complete evaporation of black holes, as a natural endpoint of Hawking radiation, gives rise to the black hole information paradox, which fundamentally challenges the principles…
Harvesting entanglement from the Lorentz-violating quantum field vacuum in a dipolar Bose-Einstein condensate
Zehua Tian, Weiping Yao, Xiaobao Liu +3
We theoretically propose an experimentally viable scheme to explore the transfer of nonclassical correlations from a dipolar Bose-Einstein condensate (BEC) to a pair of impurities…
Scrambling-Enhanced Quantum Battery Charging in Black Hole Analogues
Zhilong Liu, Ying Li, Zehua Tian +1
Black holes constitute nature's fastest quantum information scramblers, a phenomenon captured by gravitational analogue systems such as position-dependent XY spin chains. In these…
Dissipation suppression for an Unruh-DeWitt battery with a reflecting boundary
Xiaobao Liu, Zehua Tian, Jiliang Jing
In the framework of open quantum systems, we study the dynamics of an accelerated quantum battery (QB), modeled as an Unruh-DeWitt detector interacting with a real massless scalar…
Open quantum battery in three-dimensional rotating black hole spacetime
Xiaofang Liu, Zehua Tian, Jieci Wang
We investigate the charging performance of a quantum battery coupled to a scalar field in the background of a three-dimensional rotating black hole. We show that for Dirichlet boun…
Holographic superconductor with dark sector probed by entanglement entropy in higher dimensional AdS spacetime
Weiping Yao, Yifu Cai, Zehua Tian
We investigate the holographic entanglement entropy (HEE) with dark matter in a higher-dimensional AdS black hole spacetime including full back reaction, revealing its role as a di…
Dissipative dynamics of an open quantum battery in the BTZ spacetime
Zehua Tian, Xiaobao Liu, Jieci Wang +1
We consider how charging performances of a quantum battery, modeled as a two-level system, are influenced by the presence of vacuum fluctuations of a quantum field satisfying the D…
Direct Characteristic-Function Tomography of the Quantum States of Quantum Fields
Zehua Tian, Jiliang Jing, Jiangfeng Du
Herein, we propose a novel strategy for implementing a direct readout of the symmetric characteristic function of the quantum states of quantum fields without the involvement of id…
Entanglement dynamics in -deformed spacetime
Xiaobao Liu, Zehua Tian, Jiliang Jing
We treat two identical and mutually independent two-level atoms that are coupled to a quantum field as an open quantum system. The master equation that governs their evolution is d…
Using nanokelvin quantum thermometry to detect timelike Unruh effect in a Bose-Einstein condensate
Zehua Tian, Jiliang Jing
It is found that the Unruh effect can not only arise out of the entanglement between two sets of modes spanning the left and right Rindler wedges, but also between modes spanning t…
Probing cosmic string spacetime through parameter estimation
Ying Yang, Jiliang Jing, Zehua Tian
Quantum metrology studies the ultimate precision limit of physical quantities by using quantum strategy. In this paper we apply the quantum metrology technologies to the relativist…
Does relativistic motion always degrade quantum Fisher information?
Xiaobao Liu, Jiliang Jing, Zehua Tian +1
We investigate the ultimate estimation precision, characterized by the quantum Fisher information, of a two-level atom as a detector which is coupled to massless scalar field in th…
Probing Lorentz-Invariance-Violation Induced Nonthermal Unruh Effect in Quasi-Two-Dimensional Dipolar Condensates
Zehua Tian, Longhao Wu, Liang Zhang +2
The Unruh effect states an accelerated particle detector registers a thermal response when moving through the Minkowski vacuum, and its thermal feature is believed to be inseparabl…
Probing low-energy Lorentz violation from high-energy modified dispersion in dipolar Bose-Einstein condensates
Zehua Tian, Jiangfeng Du
We theoretically propose an experimentally viable scheme to use an impurity atom in a dipolar Bose-Einstein condensate (BEC), in order to probe analogue low-energy Lorentz violatio…
Gravity enhanced quantum spatial target detection
Qianqian Liu, Cuihong Wen, Zehua Tian +2
Quantum illumination can utilize entangled light to detect the low-reflectivity target that is hidden in a bright thermal background. This technique is applied to the detection of…
Verifying the upper bound on the speed of scrambling with the analogue Hawking radiation of trapped ions
Zehua Tian, Yiheng Lin, Uwe R. Fischer +1
A general bound on the Lyapunov exponent of a quantum system is given by , where is the system temperature, as established by Maldacena, Shenker, and Stanfo…
Optimal estimation of parameters for scalar fields in expanding universe exhibiting Lorentz invariance violation
Xiaobao Liu, Zehua Tian, Jieci Wang +1
We address the optimal estimation of quantum parameters, in the framework of local quantum estimation theory, for a massive scalar quantum field in the expanding Robertson-Walker u…
Analogue Hawking Radiation and Sine-Gordon Soliton in a Superconducting Circuit
Zehua Tian, Jiangfeng Du
We propose the use of a waveguide-like transmission line based on direct-current superconducting quantum interference devices (dc-SQUID) and study the sine-Gordon (SG) equation whi…
Radiative process of two entanglement atoms in de Sitter spacetime
Xiaobao Liu, Zehua Tian, Jieci Wang +1
We investigate the radiative processes of a quantum system composed by two identical two-level atoms in the de Sitter spacetime, interacting with a conformally coupled massless sca…
Roton entanglement in quenched dipolar Bose-Einstein condensates
Zehua Tian, Seok-Yeong Chä, Uwe R. Fischer
We study quasi-two-dimensional dipolar Bose-Einstein condensates, in which the Bogoliubov excitation spectrum displays, at sufficiently large gas density, a deep roton minimum due…
Analog cosmological particle generation in a superconducting circuit
Zehua Tian, Jiliang Jing, Andrzej Dragan
We propose the use of a waveguidelike transmission line based on direct-current superconducting quantum interference devices (dc-SQUID) and demonstrate that the node flux in this t…
Inhibiting decoherence of two-level atom in thermal bath by presence of boundaries
Xiaobao Liu, Zehua Tian, Jieci Wang +1
We study, in the paradigm of open quantum systems, the dynamics of quantum coherence of a static polarizable two-level atom which is coupled with a thermal bath of fluctuating elec…