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2017 (2)

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2 documents, page 1 of 1

A robust single-beam optical trap for a gram-scale mechanical oscillator

Altin, P. A.; Nguyen, T. T.-H.; Slagmolen, B. J. J.; Ward, R. L.; Shaddock, D. A.; McClelland, D. E. (2017)
Projects: ARC | Discovery Projects - Grant ID: DP160100760 (DP160100760), ARC | Future Fellowships - Grant ID: FT130100329 (FT130100329)
Precise optical control of microscopic particles has been mastered over the past three decades, with atoms, molecules and nano-particles now routinely trapped and cooled with extraordinary precision, enabling rapid progress in the study of quantum phenomena. Achieving the same level of control over macroscopic objects is expected to bring further advances in precision measurement, quantum information processing and fundamental tests of quantum mechanics. However, cavity optomechanical systems...

LISA pathfinder appreciably constrains collapse models

LISA Pathfinder's measurement of a relative acceleration noise between two free-falling test masses with a square root of the power spectral density of $5.2 \pm 0.1 \mbox{ fm s}^{-2}/\sqrt{\rm{Hz}}$ appreciably constrains collapse models. In particular, we bound the localization rate parameter, $\lambda_{\rm CSL}$, in the continuous spontaneous localization model (CSL) to be at most $\left( 2.96 \pm 0.12 \right) \times 10^{-8} \mbox{ s}^{-1}$. Moreover, we bound the regularization scale, $\si...