The road of quantum entanglement: from Einstein to 2022 Nobel Prize in Physics

TL;DR

This paper reviews the historical development and key concepts of quantum entanglement, highlighting achievements recognized by the 2022 Nobel Prize and emphasizing foundational ideas and experiments in the field.

Contribution

It provides a comprehensive overview of the evolution of quantum entanglement research, including significant experiments and theoretical milestones leading up to 2022.

Findings

Review of Bell inequalities and their role in quantum entanglement

Historical account of key experiments, including Wu's polarization-entangled photons

Analysis of developments leading to the 2022 Nobel Prize in Physics

Abstract

We explain the achievements that were awarded 2022 Nobel Prize in Physics, as well as the preceding and the later developments. The main notions and historic cornerstones of Bell inequalities, the related researches on quantum entanglement are reviewed, and the key physical ideas are emphasized. Among the early work, C. S. Wu's contributions using polarization-entangled photons from electron-positron annihilation are introduced.