Monogamy equalities for qubit entanglement from Lorentz invariance

Monogamy equalities for qubit entanglement from Lorentz invariance

Seminar author:Jens Siewert

Event date and time:09/22/2015 02:30:pm

Event location:IFAE seminar room

Event contact:

A striking result from nonrelativistic quantum mechanics is the
monogamy of entanglement, which states that a particle can be
maximally entangled only with one other party, not with several ones.
While there is the exact quantitative relation for three qubits and
also several inequalities describing monogamy properties it has not
been clear to what extent exact monogamy relations are a general feature
of quantum mechanics. We show that in all many-qubit systems
there exist strict monogamy laws for quantum correlations.
They come about through the curious relation between the nonrelativistic
quantum mechanics of qubits and Minkowski space. We elucidate the
origin of entanglement monogamy from this symmetry perspective
and provide recipes to construct new families of such equalities.