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quant-ph2021★ 3 cited
Operational detection of entanglement via quantum designs
Xin Yan, Ye-Chao Liu, Jiangwei Shang
From an operational point of view, we propose several new entanglement detection criteria using quantum designs. These criteria are constructed by considering the correlations defi…
quant-ph2011★ 69 cited
On the optimal measurement for quantum discord of two-qubit states
Mingjun Shi, Chunxiao Sun, Fengjian Jiang +2
We present an efficient method to solve the quantum discord of two-qubit X states exactly. A geometric picture is used to clarify whether and when the general POVM measurement is s…