3 papers
quant-ph2026
A new paradigm for entanglement certification using noncontextuality inequalities
Yujie Zhang, Jonah Spodek, David Schmid +5
By combining the assumptions of Bell locality with those of generalized noncontextuality, we define classes of noncontextuality inequalities for correlations arising in a bipartite…
quant-ph2026
Reassessing the boundary between classical and nonclassical for individual quantum processes
Yujie Zhang, David Schmid, Yìlè Yīng +1
There is a received wisdom about where to draw the boundary between classical and nonclassical for various types of quantum processes. For multipartite states, it is the divide bet…
quant-ph2025
Quantifiers and witnesses for the nonclassicality of measurements and of states
Yujie Zhang, Yìlè YÄ«ng, Yìlè Yīng +1
In recent work Phys. Rev. X 16, 021050, we proposed a unified notion of nonclassicality that applies to arbitrary processes in quantum theory, including individual quantum states,…