Tootfinder

Adaptive random compiler for Hamiltonian simulation
Yun-Zhuo Fan, Yu-Xia Wu, Dan-Bo Zhang
https://arxiv.org/abs/2506.15466 https://ar…

Adaptive random compiler for Hamiltonian simulation
Randomized compilation protocols have recently attracted attention as alternatives to traditional deterministic Trotter-Suzuki methods, potentially reducing circuit depth and resource overhead. These protocols determine gate application probabilities based on the strengths of Hamiltonian terms, as measured by the trace norm. However, relying solely on the trace norm to define sampling distributions may not be optimal, especially for continuous-variable and hybrid-variable systems involving unbo…

This https://arxiv.org/abs/2412.03318 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Domain-Agnostic Stroke Lesion Segmentation Using Physics-Constrained Synthetic Data
Segmenting stroke lesions in MRI is challenging due to diverse acquisition protocols that limit model generalisability. In this work, we introduce two physics-constrained approaches to generate synthetic quantitative MRI (qMRI) images that improve segmentation robustness across heterogeneous domains. Our first method, $\texttt{qATLAS}$, trains a neural network to estimate qMRI maps from standard MPRAGE images, enabling the simulation of varied MRI sequences with realistic tissue contrasts. The …

Fast Coherent Splitting of Bose-Einstein Condensates
Yevhenii Kuriatnikov, Nikolaus W\"urkner, Karthikeyan Kumaran, Tiantian Zhang, M. Venkat Ramana, Andreas Kugi, J\"org Schmiedmayer, Andreas Deutschmann-Olek, Maximilian Pr\"ufer
https://arxiv.org/abs/2507.06799

Fast Coherent Splitting of Bose-Einstein Condensates
Preparation of non-trivial quantum states without introducing unwanted excitations or decoherence remains a central challenge in utilizing ultracold atomic systems for quantum simulation. We employ optimal control methods to realize fast, coherent splitting of a one-dimensional Bose-Einstein condensate, achieving minimal classical excitations while preserving quantum correlations. Furthermore, we explore two-step protocols in which controlled classical motion is first induced and subsequently s…