{"paper":{"title":"Quantum Fisher information and spin squeezing in one-axis twisting model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jian Ma, Jing Liu, Wei Zhong, Xiaoguang Wang","submitted_at":"2013-09-19T02:58:29Z","abstract_excerpt":"We consider the quantum Fisher information and spin squeezing in one-axis twisting model with a coherent spin state $|\\theta_{0},\\phi_{0}\\rangle$. We analytically discuss the dependence of the two parameters: spin squeezing parameter $\\xi^2_{K}$ and the average parameter estimation precision $\\chi^2$ on the polar angle $\\theta_{0}$ and the azimuth angle $\\phi_0$. Moreover, we discuss the effects of the collisional dephasing on the dynamics of the two parameters. In this case, the analytical solution of $\\xi^2_K$ is also obtained."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.4842","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}