Some types of quantum entanglement cannot be both monogamous and faithful
Tuesday, August 2, 2016 - 11:01
in Physics & Chemistry
(Phys.org)—As might be expected, the terms "monogamous" and "faithful" mean something a little different in the quantum world than they do in everyday language. In a new paper, a collaboration of physicists and mathematicians have shown that, when quantified by a standard means, entanglement cannot be both monogamous and faithful at the same time. The results may be relevant when assessing the security of quantum cryptographic schemes, which rely on the monogamy of entanglement, and may also help to better understand the long-standing "firewall debate" related to the behavior of black holes.