Abstract
We report on a novel single-photon source using a single calcium ion trapped between the end facets of two optical fibers. The optical fibers act as photonic channels, and in addition their metallic jackets provide a trapping electric field for the ion. Our system successfully combines a stable single-atom emitter with fiber optics, demonstrating remarkable compactness and scalability. In consequence, it is very well suited for use in quantum networks, where single ions interface with single photons traveling through optical fibers. We have demonstrated the non-classical character of the photons generated by this efficient source in continuous as well as pulsed mode.
Highlights
We have realized a compact system to efficiently couple the fluorescent light emitted by a single trapped ion to two opposing optical fibers
The interaction of light and single atomic particles has evolved from a subject of fundamental interest to a unique tool for modern quantum technology
While early experiments provided little control over individual atomic particles, advances in trapping and cooling of atoms and ions have led to a range of applications, most notably atom chips and quantum information processing in strings of ions
Summary
We have realized a compact system to efficiently couple the fluorescent light emitted by a single trapped ion to two opposing optical fibers. The fluorescent radiation emitted by single atoms has pronounced quantum properties, as demonstrated by the second order correlation function [1]. Using optical fibers for collecting fluorescence from trapped ions is complicated by the fact that the trapping potential is adversely affected by the presence of dielectrics.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
