44 citations · 132 across the 5 of their papers we have counts for
5 papers
Unification of spatiotemporal quantum formalisms: mapping between process and pseudo-density matrices via multiple-time states
Xiangjing Liu, Zhian Jia, Yixian Qiu +2
We consider the relation between three different approaches to defining quantum states across several times and locations: the pseudo-density matrix (PDM), the process matrix, and…
Quantum Causal Inference with Extremely Light Touch
Xiangjing Liu, Yixian Qiu, Oscar Dahlsten +1
We give a causal inference scheme using quantum observations alone for a case with both temporal and spatial correlations: a bipartite quantum system with measurements at two times…
Thermodynamics of quantum switch information capacity activation
Xiangjing Liu, Daniel Ebler, Oscar Dahlsten
We address a new setting where the second law is under question: thermalizations in a quantum superposition of causal orders, enacted by the so-called quantum switch. This superpos…
Circuit complexity for generalised coherent states in thermal field dynamics
Minyong Guo, Zhong-Ying Fan, Jie Jiang +2
In this work, we study the circuit complexity for generalized coherent states in thermal systems by adopting the covariance matrix approach. We focus on the coherent thermal (CT) s…
Circuit Complexity for Fermionic Thermofield Double states
Jie Jiang, Xiangjing Liu
Motivated by the holographic complexity proposals, in this paper, we investigate the time dependence of the complexity for the Fermionic thermofield double state (TFD) using the Ni…