Quantum Entanglement Between an Optical Photon and a Solid-State Spin Qubit
Emre Togan, Yiwen Chu, Alexei S. Trifonov, Liang Jiang, Jeronimo R. Maze, Lilian Childress, Meenakshi Dutt, Anders Søndberg Sørensen, Philip Hemmer, Alexander S. Zibrov, Ataç İmamoğlu, Mikhail D. Lukin · 2011
Quantum entanglement is among the most fascinating aspects of quantum theory. Here we realize quantum entanglement between the polarization of a single optical photon and a solid-state spin qubit associated with the nitrogen vacancy centre in diamond.