{"paper":{"title":"The precision of parameter estimation for dephasing model under squeezed reservoir","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chang-shui Yu, Shao-xiong Wu","submitted_at":"2015-12-01T12:43:18Z","abstract_excerpt":"We study the precision of parameter estimation for dephasing model under squeezed environment. We analytically calculate the dephasing factor $\\gamma(t)$ and obtain the analytic quantum Fisher information (QFI) for the amplitude parameter $\\alpha$ and the phase parameter $\\phi$. It is shown that the QFI for the amplitude parameter $\\alpha$ is invariant in the whole process, while the QFI for the phase parameter $\\phi$ strongly depends on the reservoir squeezing. It is shown that the QFI can be enhanced for appropriate squeeze parameters $r$ and $\\theta$. Finally, we also investigate the effect"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.00241","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"}