11 papers · 1 filter
Enhancing Quantum Metrology with High-order Fisher Information and Experiments
Xin-Zhu Liu, Jun-Li Jiang, Yan-Han Yang +4
Fisher information plays a central role in statistics and quantum metrology, providing the basis for the celebrated Cramér-Rao bound. In this work, we introduce a new information…
On Sufficient and Necessary Criteria of Multipartite Quantum Entanglement
Zhi-Bo Chen, Shao-Ming Fei
Based on the generalized Bloch representation, we study the separability and entanglement of arbitrary dimensional multipartite quantum states. Some sufficient and some necessary c…
Photonic Energy-Coherence Theorem and Experimental Validations
Yan-Han Yang, Xin-Zhu Liu, Jun-Li Jiang +5
Wave-particle duality, intertwining two inherently contradictory properties of quantum systems, remains one of the most conceptually profound aspects of quantum mechanics. By using…
A note on lower bounds of concurrence for arbitrary dimensional bipartite quantum states
Zhi-Bo Chen, Shao-Ming Fei
Quantification of quantum entanglement plays a crucial role in the study of quantum information tasks. We present analytical lower bounds for both concurrence and 2-concurrence bas…
Experimental verification of quantum battery capacity with an optical platform
Xue Yang, Yan-Han Yang, Xin-Zhu Liu +4
Quantum batteries, consisting of quantum cells, are anticipated to surpass their classical counterparts in performance because of the presence of quantum correlations. Recent theor…
Classifying multiparticle entanglement with passive state energies
Xue Yang, Yan-Han Yang, Xin-Zhu Liu +2
Thermodynamics as a fundamental branch of physics examines the relationships between heat, work, and energy. The maximum energy extraction can be characterized by using the passive…