3 papers
quant-ph2026
Generalised Probabilistic Theories
Zujin Wen, Zihan Wang, Xiangjing Liu +1
We give an introduction to research associated with the generalised probabilistic theories framework, also known as the convex framework. States are real vectors representing lists…
quant-ph2025
Non-unique decompositions of mixed states and deterministic energy transfers
Zihan Wang, Fei Meng, Oscar Dahlsten
We investigate the impact of non-unique decompositions of mixed states on energy transfer. Mixed states generally have non-unique decompositions into pure states in quantum theory…
quant-ph2025
Spatial Incompatibility Witnesses for Quantum Temporal Correlations
Xiangjing Liu, Harshit Verma, Yunlong Xiao +2
We introduce a witness-based framework for certifying quantum temporal correlations via the pseudo-density matrix (PDM) formalism, which is a spatiotemporal generalization of the d…