Geometric Algebra Quantum Gate Decomposition

• URL: http://arxiv.org/abs/2606.12480v1
• Date: Wed, 10 Jun 2026 07:19:00 GMT
• Title: Geometric Algebra Quantum Gate Decomposition
• Abstract summary: We formulate the Pauli and Clifford groups within the complex Geometric Algebra framework.<n>We show that the Pauli group is naturally identified with the group of blades up to a global phase.<n>We also prove that Clifford operators are generated by products of /4-Pauli rotors and introduce a greedy Pauli decomposition algorithm.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum gates are usually described through matrix and tensor-product formalisms that often obscure their geometric structure. In this work, we formulate the Pauli and Clifford groups within the complex Geometric Algebra (GA) framework. We show that the Pauli group is naturally identified with the group of blades up to a global phase, thereby providing a geometric interpretation of Pauli operators and their commutation relations in terms of oriented subspaces. We further prove that Clifford operators are generated by products of π/4-Pauli rotors and introduce a greedy Pauli rotor decomposition algorithm whose empirical behavior suggests unexpectedly compact decompositions for Clifford operators. Finally, we show that Clifford+T universality admits a natural geometric interpretation through π/8-rotors within this framework.

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