Einstein-Podolsky-Rosen (EPR) steering allows Alice to remotely prepare a state in some specific bases for Bob through her choice of measurements. The temporal analogue of EPR steering, temporal steering, also reveals the steerability of a single system between different times. Focusing on a four-dimensional system, here we investigate the dynamics of the temporal steering measures, the temporal steering robustness, using 5 mutually unbiased bases. As an example of an application, we use these measures to examine the temporal correlations in a radical pair model of magnetoreception. We find that, due to interactions with a static nuclear spin, the radical pair model exhibits strong non-Markovianity.
@article{arxiv.1610.05490,
title = {Temporal Steering in Four Dimensions with applications to coupled qubits and magnetoreception},
author = {Huan-Yu Ku and Shin-Liang Chen and Hong-Bin Chen and Neill Lambert and Yueh-Nan Chen and Franco Nori},
journal= {arXiv preprint arXiv:1610.05490},
year = {2017}
}