Channel activation of CHSH nonlocality. Zhang, Y., Bravo, R., Lorenz, V., & Chitambar, E. New Journal of Physics, 2020. doi abstract bibtex 7 downloads © 2020 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. Quantum channels that break CHSH nonlocality on all input states are known as CHSH-breaking channels. In quantum networks, such channels are useless for distributing correlations that can violate the CHSH Inequality. Motivated by previous work on activation of nonlocality in quantum states, here we demonstrate an analogous activation of CHSH-breaking channels. That is, we show that certain pairs of CHSH-breaking channels are no longer CHSH-breaking when used in combination. We find that this type of activation can emerge in both uni-directional and bi-directional communication scenarios.
@article{
title = {Channel activation of CHSH nonlocality},
type = {article},
year = {2020},
keywords = {Chsh breaking channel,Nonlocality breaking channel,Superactivation},
volume = {22},
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created = {2020-08-20T19:55:40.385Z},
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last_modified = {2020-08-20T19:55:40.385Z},
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abstract = {© 2020 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. Quantum channels that break CHSH nonlocality on all input states are known as CHSH-breaking channels. In quantum networks, such channels are useless for distributing correlations that can violate the CHSH Inequality. Motivated by previous work on activation of nonlocality in quantum states, here we demonstrate an analogous activation of CHSH-breaking channels. That is, we show that certain pairs of CHSH-breaking channels are no longer CHSH-breaking when used in combination. We find that this type of activation can emerge in both uni-directional and bi-directional communication scenarios.},
bibtype = {article},
author = {Zhang, Y. and Bravo, R.A. and Lorenz, V.O. and Chitambar, E.},
doi = {10.1088/1367-2630/ab7bef},
journal = {New Journal of Physics},
number = {4}
}
Downloads: 7
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