Signatures for generalized macroscopic superpositions
量子物理
2007-05-23 v1
摘要
We develop criteria sufficient to enable detection of macroscopic coherence where there are not just two macroscopically distinct outcomes for a pointer measurement, but rather a spread of outcomes over a macroscopic range. The criteria provide a means to distinguish a macroscopic quantum description from a microscopic one based on mixtures of microscopic superpositions of pointer-measurement eigenstates. The criteria are applied to Gaussian-squeezed and spin-entangled states.
引用
@article{arxiv.quant-ph/0701204,
title = {Signatures for generalized macroscopic superpositions},
author = {E. G. Cavalcanti and M. D. Reid},
journal= {arXiv preprint arXiv:quant-ph/0701204},
year = {2007}
}
备注
4 pages, 2 figures, some changes made