Quantum logic and entanglement by neutral Rydberg atoms: methods and fidelity

Quantum gates and entanglement based on dipole-dipole interactions of neutral Rydberg atoms are relevant to both fundamental physics and quantum information science. The precision and robustness of the Rydberg-mediated entanglement protocols are the key factors limiting their applicability in experiments and near-future industry. There are various methods for generating entangling gates by exploring the Rydberg interactions of neutral atoms, each equipped with its own strengths and weaknesses. The basics and tricks in these protocols are reviewed, with specific attention paid to the achievable fidelity and the robustness to the technical issues and detrimental innate factors.

Automated summary

This article discusses the significance of quantum gates and entanglement based on dipole-dipole interactions of neutral Rydberg atoms in both fundamental physics and quantum information science. It highlights the precision and robustness of Rydberg-mediated entanglement protocols, which are key factors limiting their applicability in experiments and near-future industry. The article reviews various methods for generating entangling gates by exploring the Rydberg interactions of neutral atoms, and emphasizes the achievable fidelity and robustness to technical issues and detrimental innate factors.