2026-10-19 · arXiv Quantum Physics
arXiv:2610.23573v1 Announce Type: cross
Abstract: We open the quantum baker map with a position window of width $w$ and center $q_c$. Classical pruning tiles the $(q_c,w)$ plane into diamonds where the $T$ leading resonances form root-of-unity multiplets. At $w=1/2$ one periodic orbit survives for almost every $q_c$, and the multiplets are quantized without free parameters: their modulus $2^{-1/2}$ saturates the pressure bound and their phase is the orbit action. They form cycling multicomponent cat states, and the opening becomes one mid-circuit measurement, enabling spectroscopy with $\sim10^2$ shots on quantum processors.
原文链接：https://arxiv.org/abs/2610.23573
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