Experimental aspects of indefinite causal order in quantum mechanics

LA Rozema, T Strömberg, H Cao, Y Guo, BH Liu… - Nature Reviews …, 2024‏ - nature.com
In the past decade, the toolkit of quantum information has been expanded to include
processes in which the basic operations do not have definite causal relations. Originally …

Evading noise in multiparameter quantum metrology with indefinite causal order

AZ Goldberg, K Heshami, LL Sánchez-Soto - Physical Review Research, 2023‏ - APS
Quantum theory allows the traversing of multiple channels in a superposition of different
orders. When the order in which the channels are traversed is controlled by an auxiliary …

Weak measurement-based protocol for ergotropy protection in open quantum batteries

AHA Malavazi, R Sagar, B Ahmadi… - arxiv preprint arxiv …, 2024‏ - arxiv.org
Quantum batteries are emerging as highly efficient energy storage devices that can exceed
classical performance limits. Although there have been significant advancements in …

Embedding cyclic information-theoretic structures in acyclic space-times: No-go results for indefinite causality

V Vilasini, R Renner - Physical Review A, 2024‏ - APS
The notions of causality adopted within the quantum information and space-time physics
communities are distinct. Although experience tells us that these notions play together in a …

A resource theory of activity for quantum thermodynamics in the absence of heat baths

U Singh, G Chiribella - arxiv preprint arxiv:2304.08926, 2023‏ - arxiv.org
Active states, from which work can be extracted by time-dependent perturbations, are an
important resource for quantum thermodynamics in the absence of heat baths. Here we …