TY - JOUR AB - We propose a design concept for tailoring the local density of optical states (LDOS) in dielectric nanostructures, based on the phase distribution of the scattered optical fields induced by point-like emitters. First we demonstrate that the LDOS can be expressed in terms of a coherent summation of constructive and destructive contributions. By using an iterative approach, dielectric nanostructures can be designed to effectively remove the destructive terms. In this way, dielectric Mie resonators, featuring low LDOS for electric dipoles, can be reshaped to enable enhancements of 3 orders of magnitude. To demonstrate the generality of the method, we also design nanocavities that enhance the radiated power of a circular dipole, a quadrupole, and an arbitrary collection of coherent dipoles. Our concept provides a powerful tool for high-performance dielectric resonators and affords fundamental insights into lightmatter coupling at the nanoscale. AU - Mignuzzi,S AU - Vezzoli,S AU - Horsley,SAR AU - Barnes,WL AU - Maier,SA AU - Sapienza,R DO - 10.1021/acs.nanolett.8b04515 EP - 1617 PY - 2019/// SN - 1530-6984 SP - 1613 TI - Nanoscale design of the local density of optical states T2 - Nano Letters UR - http://dx.doi.org/10.1021/acs.nanolett.8b04515 UR - http://hdl.handle.net/10044/1/62937 VL - 19 ER -