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Squeezing of quantum noise of motion in a micromechanical resonator

zqyin 添加于 2015-7-24 16:49 | 1128 次阅读 | 0 个评论

作者
Pirkkalainen J-M, Damskägg E, Brandt M, Massel F, Sillanpää MA
摘要
A pair of conjugate observables, such as the quadrature amplitudes of harmonic motion, have fundamental fluctuations which are bound by the Heisenberg uncertainty relation. However, in a squeezed quantum state, fluctuations of a quantity can be reduced below the standard quantum limit, at the cost of increased fluctuations of the conjugate variable. Here we prepare a nearly macroscopic moving body, realized as a micromechanical resonator, in a squeezed quantum state. We obtain squeezing of one quadrature amplitude 1.4 pm 0.5 dB below the standard quantum limit, thus achieving a long-standing goal of obtaining motional squeezing in a macroscopic object.
详细资料
- 关键词: cond-mat.mes-hall; quant-ph
- 文献种类: Manual Script
- 期卷页: 2015年
- 日期: 2015-7-15
- 发布方式: arXiv e-prints
- 备注:arXiv:1507.04209v1
学科领域自然科学 » 物理学
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