关于“激光场量子本性对量子计算的若干启示”的评论
量子物理
2009-11-07 v3
摘要
近期关于应用量子化激光脉冲生成原子内能级叠加保真度的量子极限的讨论被表明基于不真实的物理假设。该讨论假定了自由空间中原子与激光场相互作用的Jaynes-Cummings动力学有效性,即原子未被共振腔环绕时。若激光场为多模量子相干态,且拉比频率远大于自发衰变率,则总原子退相干率约为自发衰变率量级。利用Mollow提出的场态幺正变换,可证原子退相干率与将激光场作经典处理时相同,无任何源于激光场量子本性的附加贡献。
引用
@article{arxiv.quant-ph/0211165,
title = {Comment on "Some implications of the quantum nature of laser fields for quantum computations"},
author = {W. M. Itano},
journal= {arXiv preprint arXiv:quant-ph/0211165},
year = {2009}
}
备注
v2: 2 pages. Unchanged except for a clarification in the next to last paragraph of the text, v3: 3 pages. Various editing changes and clarifications. Version accepted by Physical Review A