新科学想法 › 学术文库 › 学术文献 › 浏览文献

Resolving vacuum fluctuations of micromechanical motion using a phonon counter

zqyin 添加于 2014-9-4 10:00 | 1118 次阅读 | 0 个评论

作者
Lecocq F, Teufel JD, Aumentado J, Simmonds RW
摘要
Heisenberg\'s uncertainty principle results in one of the strangest quantum behaviors: an oscillator can never truly be at rest. Even in its lowest energy state, at a temperature of absolute zero, its position and momentum are still subject to quantum fluctuations. Resolving these fluctuations using linear position measurements is complicated by the fact that classical noise can masquerade as quantum noise. On the other hand, direct energy detection of the oscillator in its ground state makes it appear motionless. So how can we resolve quantum fluctuations? Here, we parametrically couple a micromechanical oscillator to a microwave cavity to prepare the system in its quantum ground state and then amplify the remaining vacuum fluctuations into real energy quanta. Exploiting a superconducting qubit as a photon/phonon number resolving detector we provide the essential non-linear resource to authenticate the unambiguously quantum nature of both light and motion. Our results further demonstrate the ability to control a long-lived mechanical oscillator using a non-Gaussian resource, directly enabling applications in quantum information processing and enhanced detection of displacement and forces.
详细资料
- 关键词: quant-ph; cond-mat.mes-hall
- 文献种类: Manual Script
- 期卷页: 2014年
- 日期: 2014-9-3
- 发布方式: arXiv e-prints
- 备注:arXiv:1409.0872v1; 19 pages, 12 figures
学科领域自然科学 » 物理学
相关链接 URL
zqyin 的文献笔记订阅