2009/02/28 by Tommaso Caneva, Michael Murphy, Tommaso Calarco +4 · 1 citation
Physics and Astronomy · #quant-ph #cond-mat.other
paper · pdf · doi:10.1103/physrevlett.103.240501
published as Phys. Rev. Lett. 103, 240501 (2009) · 4 pages, 4 figures; v2: references added, published version
arxiv created 2009/12/09 · arxiv updated 2015/05/12
Optimal control theory is a promising candidate for a drastic improvement of the performance of quantum information tasks. We explore its ultimate limit in paradigmatic cases, and demonstrate that it coincides with the maximum speed limit allowed by quantum evolution (the quantum speed limit).