远程态制备
量子物理
2009-11-06 v5
摘要
量子隐形传态利用先验纠缠和前向经典通信来传输未知量子态的一个副本。远程态制备（RSP）具有相同目标，但发送方经典地知道待传输的态是什么。我们表明RSP的渐近经典通信代价为每个量子比特一比特——是隐形传态的一半——并且在传输已知纠缠态的一部分时甚至更少。我们探讨了RSP所需的纠缠与经典通信之间的权衡，并讨论了一般量子信道的RSP容量。
引用
@article{arxiv.quant-ph/0006044,
title = {Remote State Preparation},
author = {Charles H. Bennett and David P. DiVincenzo and Peter W. Shor and John A. Smolin and Barbara M. Terhal and William K. Wootters},
journal= {arXiv preprint arXiv:quant-ph/0006044},
year = {2009}
}
备注
4 pages including 1 epsf figure; v3 has an additional author and discusses relation to work of Devetak and Berger (quant-ph/0102123); v4 improves low-entanglement protocols without back communication to perform as well as low-entanglement protocols with back communication; v5 (journal version) has a few small changes