850 citations · 4.1k across the 73 of their papers we have counts for
7 papers · 2 filters
Violations of a Leggett-Garg inequality without signalling for a photonic qutrit probed with ambiguous measurements
Kunkun Wang, Clive Emary, Mengyan Xu +4
We realise a quantum three-level system with photons distributed among three different spatial and polarization modes. Ambiguous measurement of the state of the qutrit are realised…
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…
Entanglement-enhanced quantum metrology in a noisy environment
Kunkun Wang, Xiaoping Wang, Xiang Zhan +4
Quantum metrology overcomes standard precision limits and plays a central role in science and technology. Practically it is vulnerable to imperfections such as decoherence. Here, w…
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…
Feasible superadiabatic-based shortcuts for fast generating 3D entanglement between two atoms
Xiao-Qin Yang, Dian-Yang Huang, Peng Xue +3
We propose a scheme to realize fast generation of three-dimensional entanglement between two atoms via superadiabatic-based shortcuts in an atom-cavity-fiber system. The scheme is…