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44 papers · 2 filters
Genuine multipartite entanglement detection and lower bound of multipartite concurrence
Ming Li, Shao-Ming Fei, Xianqing Li-Jost +1
The problems of genuine multipartite entanglement detection and classification are challenging. We show that a multipartite quantum state is genuine multipartite entangled if the m…
Optimal conditions for high-fidelity dispersive readout of a qubit with a photon-number-resolving detector
Andrii Sokolov
We determine the optimal parameters for a simple and efficient scheme of dispersive readout of a qubit. Depending on the qubit state (ground or excited), the resonance of a cavity…
Evolution equation for quantum coherence
Ming-Liang Hu, Heng Fan
The estimation of the decoherence process of an open quantum system is of both theoretical significance and experimental appealing. Practically, the decoherence can be easily estim…
Entanglement storage by classical fixed points in the two-axis countertwisting model
D. Kajtoch, K. Pawłowski, E. Witkowska
We analyze a scheme for storage of entanglement quantified by the quantum Fisher information in the two-axis countertwisting model. A characteristic feature of the two-axis counter…
Gaussian quantum steering and its asymmetry in curved spacetime
Jieci Wang, Haixin Cao, Jiliang Jing +1
We study Gaussian quantum steering and its asymmetry in the background of a Schwarzschild black hole. We present a Gaussian channel description of quantum state evolution under the…
Maximally coherent states and coherence-preserving operations
Yi Peng, Yong Jiang, Heng Fan
We investigate the maximally coherent states to provide a refinement in quantifying coherence and give a measure-independent definition of the coherence-preserving operations. A ma…