9 December 2016 Cooperatively-enhanced atomic dipole forces in optically trapped nanodiamonds containing NV centres, in liquid
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Abstract
We report on a new regime for optical trapping of diamond nanoparticles in liquid. While holding a nanodiamond (~150 nm) containing many NV centres (~10^3) at the focus of classical optical tweezers, we add a second laser slightly detuned from the dipole transition of the NVs. We measure a change in trap stiffness of ~10%. Remarkably, we show that our results must include collective effects – ‘superradiance’ – between colour centres, which has never been reported before for solid-state systems at room temperature. We discuss how these resonant forces depend on (and can be enhanced by) the type, number, dipole strength and spectral linewidth of the centres.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Carlo Bradac, Carlo Bradac, Mathieu L. Juan, Mathieu L. Juan, Mattias Johnsson, Mattias Johnsson, Benjamin Besga, Benjamin Besga, M. van Breugel, M. van Breugel, B. Baragiola, B. Baragiola, R. Martin, R. Martin, Gavin Brennen, Gavin Brennen, Gabriel Molina-Terriza, Gabriel Molina-Terriza, Thomas Volz, Thomas Volz, } "Cooperatively-enhanced atomic dipole forces in optically trapped nanodiamonds containing NV centres, in liquid", Proc. SPIE 10013, SPIE BioPhotonics Australasia, 1001334 (9 December 2016); doi: 10.1117/12.2242963; https://doi.org/10.1117/12.2242963
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