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Long-lived driven solid-state quantum memory

zqyin 添加于 2012-6-21 10:04 | 1561 次阅读 | 0 个评论

作者
Cai J-M, Jelezko F, Katz N, Retzker A, Plenio MB
摘要
We investigate the performance of inhomogeneously broadened spin ensembles as quantum memories under continuous dynamical decoupling. The role of the continuous driving field is two-fold: first, it decouples individual spins from magnetic noise; second and more important, it suppresses and reshapes the spectral inhomogeneity of spin ensembles. We show that a continuous driving field, which itself may also be inhomogeneous over the ensemble, can enhance the decay of the tails of the inhomogeneous broadening distribution considerably. This fact enables a spin ensemble based quantum memory to exploit the effect of cavity protection and achieve a much longer storage time. In particular, for a spin ensemble with a Lorentzian spectral distribution, our calculations demonstrate that continuous dynamical decoupling has the potential to improve its storage time by orders of magnitude for the state-of-art experimental parameters.
详细资料
- 关键词: quant-ph
- 文献种类: Manual Script
- 期卷页: 2012年
- 日期: 2012-6-20
- 发布方式: arXiv e-prints
- 备注:arXiv:1206.4430v1; 6 pages, 4 figure, comments are welcome
学科领域自然科学 » 物理学
标签

quantum memory NV centers
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