5 papers
Estimating the concurrence for quantum states via symmetric measurements
Hao-Fan Wang, Wen Zhou, Lin Chen +1
We derive improved lower bounds of concurrence induced by symmetric measurements, which retains experimental feasibility without state tomography. More importantly, we resolve a re…
Enhanced separability criteria based on symmetric measurements
Yu Lu, Hao-Fan Wang, Meng Su +2
We present separability criteria based on local symmetric measurements. These experimental plausible criteria are shown to be more efficient in detecting entanglement than the curr…
A note on Schmidt-number witnesses based on symmetric measurements
Xiao-Qian Mu, Hao-Fan Wang, Shao-Ming Fei
The Schmidt number is an important kind of characterization of quantum entanglement. Quantum states with higher Schmidt numbers demonstrate significant advantages in various quantu…
Estimating the Schmidt numbers of quantum states via symmetric measurements
Hao-Fan Wang, Shao-Ming Fei
The Schmidt numbers quantify the entanglement degree of quantum states. Quantum states with high Schmidt numbers provide a larger advantage in various quantum information processin…
Symmetric measurement-induced lower bounds of concurrence
Hao-Fan Wang, Shao-Ming Fei
We provide a class of lower bounds for concurrence based on symmetric measurements. We show that our lower bounds estimate the quantum entanglement better than some existing lower…