Improvement of stabilizer based entanglement distillation protocols by encoding operators
摘要
This paper presents a method for enumerating all encoding operators in the Clifford group for a given stabilizer. Furthermore, we classify encoding operators into the equivalence classes such that EDPs (Entanglement Distillation Protocol) constructed from encoding operators in the same equivalence class have the same performance. By this classification, for a given parameter, the number of candidates for good EDPs is significantly reduced. As a result, we find the best EDP among EDPs constructed from [[4,2]] stabilizer codes. This EDP has a better performance than previously known EDPs over wide range of fidelity.
引用
@article{arxiv.quant-ph/0506054,
title = {Improvement of stabilizer based entanglement distillation protocols by encoding operators},
author = {Shun Watanabe and Ryutaroh Matsumoto and Tomohiko Uyematsu},
journal= {arXiv preprint arXiv:quant-ph/0506054},
year = {2007}
}
备注
22 pages, 2 figures, In version 2, we enumerate all encoding operators in the Clifford group, and fix the wrong classification of encoding operators in version 1