Direct photonic coupling of a semiconductor quantum dot and a trapped ion

Abstract

Coupling individual quantum systems lies at the heart of building scalable quantum networks. Here, we report the first direct photonic coupling between a semiconductor quantum dot and a trapped ion and we demonstrate that single photons generated by a quantum dot controllably change the internal state of an ${\text{Yb}}^{+}$ ion. We ameliorate the effect of the sixty-fold mismatch of the radiative linewidths with coherent photon generation and a high-finesse fiber-based optical cavity enhancing the coupling between the single photon and the ion. The transfer of information presented here via the classical correlations between the ${\sigma }_z$-projection of the quantum-dot spin and the internal state of the ion provides a promising step towards quantum state-transfer in a hybrid photonic network.

References in corpus (8)

• The Quantum Internet
• An Elementary Quantum Network of Single Atoms in Optical Cavities
• Unconditional quantum teleportation between distant solid-state qubits
• Fiber Fabry-Perot cavity with high finesse
• Generation and transfer of single photons on a photonic crystal chip
• A single ion coupled to an optical fiber cavity
• Phase-locked indistinguishable photons with synthesized waveforms from a solid-state source
• Photon emission and absorption of a single ion coupled to an optical fiber-cavity

Cited by in corpus (6)

• A Quantum Network Node with Crossed Optical Fibre Cavities
• Exciting with Quantum Light. II. Exciting a two-level system
• Ion trap architectures and new directions
• Hong-Ou-Mandel interference between triggered and heralded single photons from separate atomic systems
• Photon bandwidth dependence of light-matter interaction
• Converting single photons from an InAs/GaAs quantum dot into the ultraviolet: preservation of second-order correlations