新科学想法 › 文献管理 › 浏览文献

Single-photon cavity optomechanics mediated by a quantum two-level system

zqyin 添加于 2014-12-18 09:42 | 1142 次阅读 | 0 个评论

作者
Pirkkalainen J-M, Cho SU, Massel F, Tuorila J, Heikkila TT, Hakonen PJ, Sillanpaa MA
摘要
Coupling electromagnetic waves in a cavity and mechanical vibrations via the radiation pressure of the photons [1,2] is a promising platform for investigations of quantum mechanical properties of motion of macroscopic bodies and thereby the limits of quantum mechanics [3,4]. A drawback is that the effect of one photon tends to be tiny, and hence one of the pressing challenges is to substantially increase the interaction strength towards the scale of the cavity damping rate. A novel scenario is to introduce into the setup a quantum two-level system (qubit), which, besides strengthening the coupling, allows for rich physics via strongly enhanced nonlinearities [5-8]. Addressing these issues, here we present a design of cavity optomechanics in the microwave frequency regime involving a Josephson junction qubit. We demonstrate boosting of the radiation pressure interaction energy by six orders of magnitude, allowing to approach the strong coupling regime, where a single quantum of vibrations shifts the cavity frequency by more than its linewidth. We observe nonlinear phenomena at single-photon energies, such as an enhanced damping due to the two-level system. This work opens up nonlinear cavity optomechanics as a plausible tool for the study of quantum properties of motion.
详细资料
- 关键词: cond-mat.mes-hall; quant-ph
- 文献种类:手稿
- 期卷页: 2014年
- 日期: 2014-12-18
- 发布方式: arXiv e-prints
- 备注:arXiv:1412.5518v1; 5 pages + supplementary
相关链接 URL
zqyin 的文献笔记订阅