107 citations · 544 across the 12 of their papers we have counts for
3 papers · 1 filter
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…
Enhanced violations of Leggett-Garg inequalities in an experimental three-level system
Kunkun Wang, Clive Emary, Xiang Zhan +3
Leggett-Garg inequalities are tests of macroscopic realism that can be violated by quantum mechanics. In this letter, we realise photonic Leggett-Garg tests on a three-level system…