Relating quantum incoherence, entanglement and superluminal signalling
Quantum Physics
2020-01-27 v1 Atomic Physics
Abstract
Hereby we inspect two-partite entanglement using thought experiment that relates properties of incoherently mixed states to the impossibility of faster-than-light (FTL) signalling. We show that if there appears a way to distinguish ensembles of particles that are described by the same density matrix, but are generated using different pure states - properties of entanglement (namely, non-classical correlations) could be employed to create an FTL signalling device. We do not claim FTL signalling is possible, rather, we establish the logical connection between the aforementioned properties of current physical theory which has not so far been evident.
Cite
@article{arxiv.2001.08867,
title = {Relating quantum incoherence, entanglement and superluminal signalling},
author = {Stanislav Filatov and Marcis Auzinsh},
journal= {arXiv preprint arXiv:2001.08867},
year = {2020}
}
Comments
13 pages, 3 figures