Protocol for Hybrid Entanglement Between a Trapped Atom and a Semiconductor Quantum Dot

Abstract

We propose a quantum optical interface between an atomic and solid state system. We show that quantum states in a single trapped atom can be entangled with the states of a semiconductor quantum dot through their common interaction with a classical laser field. The interference and detection of the resulting scattered photons can then herald the entanglement of the disparate atomic and solid-state quantum bits. We develop a protocol that can succeed despite a significant mismatch in the radiative characteristics of the two matter-based qubits. We study in detail a particular case of this interface applied to a single trapped \Yb ion and a cavity-coupled InGaAs semiconductor quantum dot. Entanglement fidelity and success rates are found to be robust to a broad range of experimental nonideal effects such as dispersion mismatch, atom recoil, and multi-photon scattering. We conclude that it should be possible to produce highly entangled states of these complementary qubit systems under realistic experimental conditions.

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• Prospects for storage and retrieval of a quantum dot single photon in an ultracold ${}^{87}$Rb ensemble
• Aberration-corrected quantum temporal imaging system
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• Photon bandwidth dependence of light-matter interaction
• Spectral Compression of Narrowband Single Photons with a Resonant Cavity
• Noise-induced distributed entanglement in atom-cavity-fiber system
• The power and limitations of learning quantum dynamics incoherently
• Analysis of photon-mediated entanglement between distinguishable matter qubits
• Robust Distant Entanglement Generation Using Coherent Multiphoton Scattering
• Photon-mediated entanglement scheme between a ZnO semiconductor defect and a trapped Yb ion