51 citations · 557 across the 38 of their papers we have counts for
8 papers · 2 filters
Characterizing arbitrary quantum networks in the noisy intermediate-scale quantum era
Zhen-Peng Xu
Quantum networks are of high interest nowadays. In short, they describe the distribution of quantum sources represented by edges to different parties represented by nodes in the ne…
Experimental test of high-dimensional quantum contextuality based on contextuality concentration
Zheng-Hao Liu, Hui-Xian Meng, Zhen-Peng Xu +6
Contextuality is a distinctive feature of quantum theory and a fundamental resource for quantum computation. However, existing examples of contextuality in high-dimensional systems…
Quantum LOSR networks cannot generate graph states with high fidelity
Yi-Xuan Wang, Zhen-Peng Xu, Otfried Gühne
Quantum networks lead to novel notions of locality and correlations and an important problem concerns the question of which quantum states can be experimentally prepared with a giv…
Exploring the boundary of quantum correlations with a time-domain optical processor
Zheng-Hao Liu, Yu Meng, Yu-Ze Wu +10
Contextuality is a hallmark feature of the quantum theory that captures its incompatibility with any noncontextual hidden-variable model. The Greenberger--Horne--Zeilinger (GHZ)-ty…
Systematic construction of quantum contextuality scenarios with rank advantage
Pascal Höhn, Zhen-Peng Xu, Matthias Kleinmann
A set of quantum measurements exhibits quantum contextuality when any consistent value assignment to the measurement outcomes leads to a contradiction with quantum theory. In the o…
Fate of multiparticle entanglement when one particle becomes classical
Zhen-Peng Xu, Satoya Imai, Otfried Gühne
We study the change of multiparticle entanglement if one particle becomes classical, in the sense that this particle is destructed by a measurement, but the gained information is e…
Graph-theoretic approach to Bell experiments with low detection efficiency
Zhen-Peng Xu, Jonathan Steinberg, Jaskaran Singh +3
Bell inequality tests where the detection efficiency is below a certain threshold can be simulated with local hidden-variable models. Here, we introduce a method to…
Quantum contextuality provides communication complexity advantage
Shashank Gupta, Debashis Saha, Zhen-Peng Xu +2
Despite the conceptual importance of contextuality in quantum mechanics, there is a hitherto limited number of applications requiring contextuality but not entanglement. Here, we s…