TY - JOUR
T1 - Quantum information and precision measurement
JF - Journal of Modern Optics
Y1 - 2000
A1 - Andrew M. Childs
A1 - John Preskill
A1 - Joseph Renes
AB - We describe some applications of quantum information theory to the analysis of quantum limits on measurement sensitivity. A measurement of a weak force acting on a quantum system is a determination of a classical parameter appearing in the master equation that governs the evolution of the system; limitations on measurement accuracy arise because it is not possible to distinguish perfectly among the different possible values of this parameter. Tools developed in the study of quantum information and computation can be exploited to improve the precision of physics experiments; examples include superdense coding, fast database search, and the quantum Fourier transform.
VL - 47
U4 - 155 - 176
UR - http://arxiv.org/abs/quant-ph/9904021v2
CP - 2-3
J1 - Journal of Modern Optics
U5 - 10.1080/09500340008244034
ER -