300 citations · 769 across the 22 of their papers we have counts for
22 papers
Hierarchy of multipartite nonlocality in the nonsignaling scenario
Xiaoxu Wang, Chengjie Zhang, Qing Chen +3
We propose a hierarchy of Bell-type inequalities for arbitrary -partite systems that identify the different degrees of nonlocality ranging from standard to genuine multipartite…
Evaluation of entanglement measures by a single observable
Chengjie Zhang, Sixia Yu, Qing Chen +2
We present observable lower bounds for several bipartite entanglement measures including entanglement of formation, geometric measure of entanglement, concurrence, convex-roof exte…
Detecting and estimating continuous-variable entanglement by local orthogonal observables
Chengjie Zhang, Sixia Yu, Qing Chen +1
Entanglement detection and estimation are fundamental in quantum information science. Compared with discrete-variable states, for which lots of efficient entanglement detection cri…
Test of Genuine Multipartite Nonlocality Without Inequality
Qing Chen, Sixia Yu, Chengjie Zhang +2
In this letter we propose a set of conditions on the joint probabilities as a test of genuine multipartite nonlocality without inequality. Our test is failed by all non-signaling l…
All entangled pure states violate a single Bell's inequality
Sixia Yu, Qing Chen, Chengjie Zhang +2
We show that a single Bell's inequality with two dichotomic observables for each observer, which is originated from Hardy's nonlocality proof without inequalities, is violated by a…
Quantum channels that preserve the commutativity
Sixia Yu, Chengjie Zhang, Qing Chen +1
We identify and characterize all the local quantum channels that preserves the set of classical states, i.e., does not create any quantum correlations. At first we show that the qu…