Measurementdriven quantum evolution from a known state
Abstract
We study the problem of driving a known initial quantum state onto a known pure state without using a unitary evolution. This task can be achieved by means of von Neumann measurement processes, introducing N observables which are consecutively measured in order to approach the state of the system to the target state. We proved that the probability of projecting onto the target state can be increased meaningfully by adding suitable observables to the process, that is, it converges to 1 when N increases. We also discuss a physical implementation of this scheme.
 Publication:

arXiv eprints
 Pub Date:
 June 2006
 arXiv:
 arXiv:quantph/0606086
 Bibcode:
 2006quant.ph..6086R
 Keywords:

 Quantum Physics