Determining the output port from the distance
Quantum Physics
2021-01-08 v1
Abstract
In this paper we discuss the following scenario. Suppose that two distant observers share an entangled state of two -level systems. The two observers, Alice and Bob, have to send randomly their particles through a multi-input multi-output device. The task is to determine the nature of this device or black-box, such that Alice will be able to determine with certainty the output port of Bob's particle. We prove that this black-box is the multi-input-port quantum sorter. Further, we investigate if it is possible to determine the output port in the case when three observers are involved by analyzing the cases when the Greenberger-Horne-Zeilinger (GHZ) state and the W state are used.
Cite
@article{arxiv.2101.02642,
title = {Determining the output port from the distance},
author = {Iulia Ghiu},
journal= {arXiv preprint arXiv:2101.02642},
year = {2021}
}