Nonclassical characteristic functions for highly sensitive measurements
arXiv:quant-ph/0701214 · doi:10.1103/PhysRevA.76.053835
Abstract
Characteristic functions are shown to be useful for highly sensitive measurements. Redistributions of motional Fock states of a trapped atom can be directly monitored via the most fragile nonclassical part of the characteristic function. The method can also be used for decoherence measurements in optical quantum-information systems.
4 pages, 3 figures