Ion crystal transducer for strong coupling between single ions and single photons

TL;DR

This paper proposes a novel ion crystal transducer that enhances photon-ion coupling via collective effects, enabling advanced quantum information applications like single-photon sources and quantum memories.

Contribution

It introduces a new method for strong photon-ion coupling using ion crystals, expanding quantum interface capabilities.

Findings

Enhanced photon-ion coupling through collective ion crystal effects

Potential for high-fidelity quantum memory and entanglement generation

Feasibility of deterministic photon-photon and photon-ion entanglement

Abstract

A new approach for realization of a quantum interface between single photons and single ions in an ion crystal is proposed and analyzed. In our approach the coupling between a single photon and a single ion is enhanced via the collective degrees of freedom of the ion crystal. Applications including single-photon generation, a memory for a quantum repeater, and a deterministic photon-photon, photon-phonon, or photon-ion entangler are discussed.