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arXiv · 1609.03534

Weighted Graph Theory Representation of Quantum Information Inspired by Lie Algebras

Abdelilah Belhaj·Adil Belhaj·Larbi Machkouri·Moulay Brahim Sedra·Soumia Ziti
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Abstract

Borrowing ideas from the relation between simply laced Lie algebras and Dynkin diagrams, a weighted graph theory representation of quantum information is addressed. In this way, the density matrix of a quantum state can be interpreted as a signless Laplacian matrix of an associated graph. Using similarities with root systems of simply laced Lie algebras, one-qubit theory is analyzed in some details and is found to be linked to a non-oriented weighted graph having two vertices. Moreover, this one-qubit theory is generalized to n-qubits. In this representation, quantum gates correspond to graph weight operations preserving the probability condition. A speculation from string theory, via D-brane quivers, is also given.

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Abdelilah Belhaj, Adil Belhaj, Larbi Machkouri, Moulay Brahim Sedra, Soumia Ziti. 2016-09-12. Weighted Graph Theory Representation of Quantum Information Inspired by Lie Algebras. https://arxiv.org/abs/1609.03534

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