Integrated photonic structures for photon-mediated entanglement of trapped ions

Understand

Trapped atomic ions are natural candidates for quantum information processing and have the potential to realize or improve quantum computing, sensing, and networking.

• These applications often require the collection of individual photons emitted from ions into guided optical modes, in some cases for the production of entanglement between separated ions.
• Proof-of-principle demonstrations of such photon collection from trapped ions have been performed using high-numerical-aperture lenses or cavities and single-mode fibers, but integrated photonic elements in ion-trap structures offer advantages in scalability and manufacturabilty over traditional optics.
• In this paper we analyze structures monolithically fabricated with an ion trap for collecting ion-emitted photons, coupling them into waveguides, and manipulating them via interference.