211 citations · 300 across the 4 of their papers we have counts for
5 papers
Topology with broken parity-time symmetry
Lei Xiao, Xingze Qiu, Kunkun Wang +3
Topological edge states arise in parity-time ()-symmetric non-unitary quantum dynamics but have so far only been discussed in the -symmetry-unbroken reg…
Detecting topological invariants in nonunitary discrete-time quantum walks
Xiang Zhan, Lei Xiao, Zhihao Bian +5
We report the experimental detection of bulk topological invariants in nonunitary discrete-time quantum walks with single photons. The nonunitarity of the quantum dynamics is enfor…
Optimal experimental demonstration of error-tolerant quantum witnesses
Kunkun Wang, George C. Knee, Xiang Zhan +3
Testing quantum theory on macroscopic scales is a longstanding challenge that might help to revolutionise physics. For example, laboratory tests (such as those anticipated in nanom…
Centrality measure based on continuous-time quantum walks and experimental realization
Josh A. Izaac, Xiang Zhan, Zhihao Bian +4
Network centrality has important implications well beyond its role in physical and information transport analysis; as such, various quantum walk-based algorithms have been proposed…
Experimental investigation of the stronger uncertainty relations for all incompatible observables
Kunkun Wang, Xiang Zhan, Zhihao Bian +3
The Heisenberg-Robertson uncertainty relation quantitatively expresses the impossibility of jointly sharp preparation of incompatible observables. However it does not capture the c…