Multidimensional Purcell effect in an ytterbium-doped ring resonator

Recent Advances in Rare Earth Doped Inorganic Crystalline Materials for Quantum Information Processing

“…An alternative to structure the crystals themselves consists in coupling rare earth ions to waveguide or cavities deposited on the crystal surface through evanescent waves. This has been reported in Pr 3+[99] and Er 3+[100] doped Y 2 SiO 5 and Yb 3+ doped glasses …”

Cavity-induced anticorrelated photon-emission rates of a single ion

“…More than 30 years later, it was experimentally demonstrated with Rydberg atoms [2,3]. Since then, enhanced/reduced emission rates due to an optical cavity surrounding single emitters have been shown in a variety of physical systems such as trapped ions [4][5][6], semiconductor quantum dots [7], nitrogen-vacancy centers in diamond [8] and rareearth ions in solids [9,10]. In particular, single trapped ions coupled to optical cavities provide an ideal environment to study and exploit the enhanced light-matter interaction [4,11] due to their unparalleled quantum control.…”

Coupling erbium dopants in yttrium orthosilicate to silicon photonic resonators and waveguides

“…Steps towards integrating rare-earth ensembles with on-chip waveguides have been taken using waveguides fabricated by ion implantation [7], laser-writing [8], and focused ion beam milling [9]. Hybrid platforms where the waveguides are fabricated in deposited layers of chalcogenide glasses [10] and silicon nitride [11] have also been explored. However, the most scalable on-chip photonic platform would harness the excellent prospects for integration provided by silicon photonics and likely leverage the coherence properties of rare earth host crystals.…”