Purification of Quantum State through Zeno-like Measurements
arXiv:quant-ph/0402183 · doi:10.1143/JPSJS.72SC.34
Abstract
We present a novel procedure to purify quantum states, i.e., purification through Zeno-like measurements. By simply repeating one and the same measurement on a quantum system, one can purify another system in interaction with the former. The conditions for the (efficient) purification are specified on a rather general setting, and the framework of the method possesses wide applicability. It is explicitly demonstrated on a specific setup that the purification becomes very efficient by tuning relevant parameters.
4 pages, 1 figure; Contribution to the Proceedings of "Waseda International Symposium on Fundamental Physics: New Perspectives in Quantum Physics", Tokyo, 2002