Toward Emission Enhancement\nof Blue Emitters in hBN\nUsing Plasmonic Lattices

Hexagonal\nboron nitride (hBN) has been gaining attention as a compelling\nmaterial platform hosting quantum emitters at room temperature. A\nparticularly important family of emitters in hBN are those with a\nzero phonon line at 436 nm (termed B-centers) since these can be engineered\non demand using electron beam irradiation. In this work, we demonstrate\na pathway to integrate these emitters with plasmonic lattices. The\nblue wavelength necessitates the use of aluminum metal, instead of\ngold or silver. Consequently, we utilize trench cavity geometry and\ntransfer hBN layers on top of the lattice. We then create deterministically\nthe emitters and measure a 6-fold enhancement in the emission intensity.\nWe conclude by discussing the potential possibilities of plasmonic\nlattice arrays for scalable enhancement of quantum emitters in layered\nmaterials.