Quantum estimation of a damping constant
arXiv:quant-ph/0703091 · doi:10.1103/PhysRevA.75.042322
Abstract
We discuss an interferometric approach to the estimation of quantum mechanical damping. We study specific classes of entangled and separable probe states consisting of superpositions of coherent states. Based on the assumption of limited quantum resources we show that entanglement improves the estimation of an unknown damping constant.
7 pages, 5 figures