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quant-ph2025
Peak state transfer in continuous quantum walks
Gabriel Coutinho, Krystal Guo, Vincent Schmeits
We introduce and study peak state transfer, a notion of high state transfer in qubit networks modeled by continuous-time quantum walks. Unlike perfect or pretty good state transfer…
math.OC2025
Semidefinite programming bounds on fractional cut-cover and maximum 2-SAT for highly regular graphs
Henrique Assumpção, Gabriel Coutinho
We use semidefinite programming to bound the fractional cut-cover parameter of graphs in association schemes in terms of their smallest eigenvalue. We also extend the equality case…