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The surface lattice resonance produced by metal nanoparticles in a regular periodic array has a narrower bandwidth than single nanoparticles, resulting in widespread use in the field of nanolasers and nanosensors. In addition, the fano peak's resonant wavelength shows a strong dependence on the array periodicity, allowing us to tune Fano resonance in all UV-Vis and near-IR regimes at the desired wavelength.
The sensitivity that can be achieved with a consistent state can be enabled by using trapped-ions to detect weak electric fields by sensing displacements over the Standard Quantum Limit. In a 2D crystal, we describe experiments and theories examining the boundaries of electric field sensing by the excitation of 100s of ions in a center-of-mass transition. The displacement of the ion crystal can be precisely determined by measuring the spin state by using spin-dependent optical dipole forces to couple mechanical movement of the ions to their spin states.
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