Squashed entanglement, also called CMI entanglement (CMI can be pronounced "see me"), is an information theoretic measure of quantum entanglement for a bipartite quantum system. If formula_1 is the density matrix of a system formula_2 composed of two subsystems formula_3 and formula_4, then the CMI entanglement formula_5 of system formula_2 is defined by
Squashed entanglement is an information theoretic measure of quantum entanglement for a tripartite quantum system.
( z1 measure :ARG0 ( z2 theory :mod ( z3 information ) ) :ARG1 ( z4 entanglement :mod ( z5 quantum ) ) :ARG3 ( z6 system :mod z5 :mod ( z7 triilateral ) ) :ARG1-of ( z8 squash ) )