Remote State Preparation
Abstract
Quantum teleportation uses prior entanglement and forward classical communication to transmit one instance of an unknown quantum state. Remote state preparation (RSP) has the same goal, but the sender knows classically what state is to be transmitted. We show that the asymptotic classical communication cost of RSP is one bit per qubit - half that of teleportation - and becomes even less when transmitting part of a known entangled state. We explore the tradeoff between entanglement and classical communication required for RSP, and discuss RSP capacities of general quantum channels.
Keywords
Cite
@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}
}
Comments
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