C-band single photons from a trapped ion via two-stage frequency conversion
Abstract
Fiber-based quantum networks require photons at telecommunications wavelengths to interconnect qubits separated by long distances. Trapped ions are leading candidates for quantum networking with high-fidelity two-qubit gates, long coherence times, and the ability to readily emit photons entangled with the ion's internal qubit states. However, trapped ions typically emit photons at wavelengths incompatible with telecommunications fiber. Here, we demonstrate frequency conversion of visible photons, emitted from the S–P dipole transition of a trapped Ba+ ion into the telecommunications C-band. These results are an important step toward enabling a long-distance trapped ion quantum internet.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 23, 2021
- Source ID
- 10.1063/5.0059966
Entities
People
- Edo Waks
- Jake Cassell
- James D Siverns
- John Hannegan
- Qudsia Quraishi
- Uday Saha
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- United States Army Research Laboratory
- University of Maryland