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quant-ph2026
Chutes and Ladders: Dynamical Automorphisms via the ZX-Calculus
Alexander Frei, Sascha Zakaib-Bernier, Zachary Mann +2
The ZX-calculus is a powerful graphical language for manipulating quantum circuits, which has recently found many applications in quantum error correction. We extend this language…
quant-ph2023
The tilted CHSH games: an operator algebraic classification
Alexander Frei, Azin Shahiri
We introduce a general systematic procedure for solving any binary-input binary-output game using operator algebraic techniques on the representation theory for the underlying grou…
quant-ph2022★ 1 cited
The quantum commuting model (Ia): The CHSH game and other examples: Uniqueness of optimal states
Alexander Frei
We present in this paper that the CHSH game admits one and only one optimal state and so remove all ambiguity of representations. More precisely, we use the well-known universal de…