Abstract
We present a method of developing analytical measures of delocalization in arbitrary -like states, otherwise known as mixed states in the single-excitation subspace. These measures calculate the distance of a state to its closest reference state with entanglement. We find that the reference state is determined by the purity of the state undergoing measurement. Measures with up to 6-body delocalization for a 6-body system are derived in full, while an algorithm for general measures is given.
- Received 30 January 2014
DOI:https://doi.org/10.1103/PhysRevA.90.032312
©2014 American Physical Society