18-Qubit Entanglement with Six Photons’ Three Degrees of Freedom
18-Qubit Entanglement with Six Photons’ Three Degrees of Freedom
A central theme in quantum information science is to coherently control an increasing number of quantum particles as well as their internal and external degrees of freedom (DoFs), meanwhile maintaining a high level of coherence. The ability to create and verify multiparticle entanglement with individual control and measurement of each …