{"paper":{"title":"The power of a control qubit in weak measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Douglas Mundarain, Miguel Orszag, Raul Coto, V\\'ictor Montenegro, Vitalie Eremeev","submitted_at":"2016-09-28T14:47:11Z","abstract_excerpt":"In the late 80s, a curious effect suggested by Aharanov, Albert and Vaidman opened up new vistas regarding quantum measurements on weakly coupled systems. There, a combination of a \"weak\" finite interaction together with a \"strong\" post-selection measurement leads to an anomalous effect, namely the mean value of a spin-1/2 particle in the $z-$direction lies outside the conventional spectrum of $\\pm$1.\n  In this paper, we investigate the quantum control of the weak value amplification of a qubit system coupled to a meter, via a second non-interacting qubit, initially quantum correlated with the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.08936","kind":"arxiv","version":1},"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"}