Quantum state expansion
量子物理
2007-05-23 v1
摘要
It is experimentally demonstrated that an arbitrary quantum state of a single spin 1/2: a|u> + b|d> can be converted into a superposition of the two ferromagnetic states of a spin cluster: a|uu...uu> + b|dd...dd>. The physical system is a cluster of seven dipolar-coupled nuclear spins of single-labeled 13C-benzene molecules in a liquid-crystalline matrix. In this complex system, the pseudopure ground state and the required controlled unitary transformations have been implemented. The experimental scheme can be considered as an explicit model of quantum measurement.
引用
@article{arxiv.quant-ph/0501123,
title = {Quantum state expansion},
author = {Jae-Seung Lee and A. K. Khitrin},
journal= {arXiv preprint arXiv:quant-ph/0501123},
year = {2007}
}
备注
9 pages, 3 figures