Barg Andreas, Tsaturyan Yeghishe, Belhage Erik, Nielsen William H P, Møller Christoffer B, Schliesser Albert
Niels Bohr Institute, Blegdamsvej 17, 2100 Copenhagen, Denmark.
Appl Phys B. 2017;123(1):8. doi: 10.1007/s00340-016-6585-7. Epub 2016 Dec 15.
We discuss several techniques based on laser-driven interferometers and cavities to measure nanomechanical motion. With increasing complexity, they achieve sensitivities reaching from thermal displacement amplitudes, typically at the picometer scale, all the way to the quantum regime, in which radiation pressure induces motion correlated with the quantum fluctuations of the probing light. We show that an imaging modality is readily provided by scanning laser interferometry, reaching a sensitivity on the order of , and a transverse resolution down to . We compare this approach with a less versatile, but faster (single-shot) dark-field imaging technique.
我们讨论了几种基于激光驱动干涉仪和腔的技术来测量纳米机械运动。随着复杂度的增加，它们实现的灵敏度范围从通常在皮米尺度的热位移幅度，一直到量子 regime，在该量子 regime 中，辐射压力会诱导与探测光的量子涨落相关的运动。我们表明，扫描激光干涉测量法很容易提供一种成像方式，其灵敏度达到 量级，横向分辨率低至 。我们将这种方法与一种通用性较差但速度更快（单次）的暗场成像技术进行比较。
