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Classifying Quantum Entanglement through Topological Links

on 05-12-2018

Gonçalo Quinta and Rui André, from Instituto Superior Técnico

Date & time: Wednesday, December 5th, 16:00h
Location: Instituto Superior Técnico, Lisbon, Seminar room (2.8.3), Physics Building

We present a classification scheme for quantum entanglement based on topological links. This is done by identifying a nonrigid ring to a particle, attributing the act of cutting and removing a ring to the operation of tracing out the particle, and associating linked rings to entangled particles. This analogy naturally leads us to a classification of multipartite quantum entanglement based on all possible distinct links for any given number of rings. We demonstrate the use of this new classification scheme for three and four qubits and its potential in the context of qubit networks.

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