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quant-ph2026
Geometric power capacity of coherent ergotropy in quantum batteries
Dong-Ping Xuan, Hua Nan, Zhi-Xi Wang +1
We explore coherent ergotropy extraction in quantum batteries from a resource-geometric point of view. For an initial state , we quantify the coherent extraction process by the…
quant-ph2026
Estimating the concurrence for quantum states via symmetric measurements
Hao-Fan Wang, Wen Zhou, Lin Chen +1
Concurrence is one of the most well-known entanglement measures. We show that, for arbitrary bipartite states, the lower bound of concurrence induced by symmetric measurements is a…