Interference in dielectrics and pseudo-measurements
量子物理
2015-06-26 v1
摘要
Inserting a lossy dielectric into one arm of an interference experiment acts in many ways like a measurement. If two entangled photons are passed through the interferometer, a certain amount of information is gained about which path they took, and the interference pattern in a coincidence count measurement is suppressed. However, by inserting a second dielectric into the other arm of the interferometer, one can restore the interference pattern. Two of these pseudo-measurements can thus cancel each other out. This is somewhat analogous to the proposed quantum eraser experiments.
引用
@article{arxiv.quant-ph/9612032,
title = {Interference in dielectrics and pseudo-measurements},
author = {Todd A. Brun and Stephen M. Barnett},
journal= {arXiv preprint arXiv:quant-ph/9612032},
year = {2015}
}
备注
7 pages RevTeX 3.0 + 2 figures (postscript). Submitted to Phys. Rev. A