# Witnessing superpositions of causal orders by weak measurements at a given time

@inproceedings{Pusuluk2022WitnessingSO, title={Witnessing superpositions of causal orders by weak measurements at a given time}, author={Onur Pusuluk and Z Gedik and Vlatko Vedral}, year={2022} }

The questions we raise in this letter are as follows: What is the most general representation of a quantum state at a single time? Can we adapt the current representations to the scenarios in which the order of quantum operations are coherently or incoherently superposed? If so, what is the relation between the state at a given time and the uncertainty in the order of events before and after it? By establishing the relationship of two-state vector formalism with pseudo-density operators, we…

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