Geometric phases for mixed states in interferometry
量子物理
2016-08-15 v2
摘要
We provide a physical prescription based on interferometry for introducing the total phase of a mixed state undergoing unitary evolution, which has been an elusive concept in the past. We define the parallel transport condition that provides a connection-form for obtaining the geometric phase for mixed states. The expression for the geometric phase for mixed state reduces to well known formulas in the pure state case when a system undergoes noncyclic and unitary quantum evolution.
引用
@article{arxiv.quant-ph/0005072,
title = {Geometric phases for mixed states in interferometry},
author = {Erik Sjöqvist and Arun K. Pati and Artur Ekert and Jeeva S. Anandan and Marie Ericsson and Daniel K. L. Oi and Vlatko Vedral},
journal= {arXiv preprint arXiv:quant-ph/0005072},
year = {2016}
}
备注
Two column, 4 pages, Latex file, No figures, Few changes