Path-Phase Information Complementarity for Interfering Particles through State-Discrimination
Quantum Physics
2009-03-26 v1
Abstract
We analyze the trade-off between the amounts of information obtainable on complementary properties of a qubit state by simultaneous measurements. We consider a "state discrimination" scenario wherein the same measurements are repeated, but the input states must be guessed in every run. We find a general complementarity relation for path-phase guesses by any generalized measurements in this scenario. The counterpart of this input-output mutual information (MI) reveals a hitherto unknown aspect of complementarity.
Cite
@article{arxiv.0903.4256,
title = {Path-Phase Information Complementarity for Interfering Particles through State-Discrimination},
author = {Noam Erez and Daniel Jacobs and Gershon Kurizki},
journal= {arXiv preprint arXiv:0903.4256},
year = {2009}
}
Comments
3 figures