Millikelvin cooling of the center-of-mass motion of a levitated nanoparticle
Millikelvin cooling of the center-of-mass motion of a levitated nanoparticle
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悬浮纳米粒子质心运动的毫开尔文冷却
DOI：
10.1117/12.2275678
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发表时间：
2017
期刊：
影响因子：
10.8
通讯作者：
P. Barker
中科院分区：
文献类型：
--
作者：
N. P. Bullier;A. Pontin;P. Barker
腔光力学已被用于将悬浮纳米球的质心运动冷却到毫开尔文温度。将粒子囚禁在腔场中能够实现高机械频率，使系统接近分辨边带机制。在此我们描述一种由印刷电路板构建的保罗阱，它足够小以适配在光学腔内，并且应该能够使粒子在腔场内准确定位。这将增加光学阻尼，从而使最终温度至少降低一个数量级。对阱内势的模拟使我们能够通过测量作为阱参数函数的本征频率来估计被囚禁粒子的荷质比。最后，我们展示了降低激光噪声对于在相敏读出中达到更低温度和更高灵敏度的重要性。
Cavity optomechanics has been used to cool the center-of-mass motion of levitated nanospheres to millikelvin temperatures. Trapping the particle in the cavity field enables high mechanical frequencies bringing the system close to the resolved-sideband regime. Here we describe a Paul trap constructed from a printed circuit board that is small enough to fit inside the optical cavity and which should enable an accurate positioning of the particle inside the cavity field. This will increase the optical damping and therefore reduce the final temperature by at least one order of magnitude. Simulations of the potential inside the trap enable us to estimate the charge- to-mass ratio of trapped particles by measuring the secular frequencies as a function of the trap parameters. Lastly, we show the importance of reducing laser noise to reach lower temperatures and higher sensitivity in the phase-sensitive readout.
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影响因子：
8.6
作者：
Millen, J.;Fonseca, P. Z. G.;Barker, P. F.
通讯作者：
Barker, P. F.
影响因子：
3.3
作者：
S. Rips;M. Kiffner;I. Wilson-Rae;Michael J. Hartmann
通讯作者：
S. Rips;M. Kiffner;I. Wilson-Rae;Michael J. Hartmann
影响因子：
3.3
作者：
Aranas E
通讯作者：
Aranas E
影响因子：
8.6
作者：
Fonseca, P. Z. G.;Aranas, E. B.;Barker, P. F.
通讯作者：
Barker, P. F.