Practical Implementations of Twirl Operations
量子物理
2007-05-23 v1
摘要
Twirl operations, which convert impure singlet states into Werner states, play an important role in many schemes for entanglement purification. In this paper we describe strategies for implementing twirl operations, with an emphasis on methods suitable for ensemble quantum information processors such as nuclear magnetic resonance (NMR) quantum computers. We implement our twirl operation on a general two-spin mixed state using liquid state NMR techniques, demonstrating that we can obtain the singlet Werner state with high fidelity.
引用
@article{arxiv.quant-ph/0409142,
title = {Practical Implementations of Twirl Operations},
author = {M. S. Anwar and L. Xiao and A. J. Short and J. A. Jones and D. Blazina and S. B. Duckett and H. A. Carteret},
journal= {arXiv preprint arXiv:quant-ph/0409142},
year = {2007}
}
备注
6 pages RevTex4 including 2 figures (fig 1 low quality to save space)