Diabolical Points Could Provide Control of Quantum Emitters

Researchers from the Chinese Academy of Sciences and the University of Glasglow have discovered a way to potentially provide control over the emission of individual photons for quantum computing. Active emitters in photonic structures are essential for a coherent electron-photon interface in a quantum photonic network. However, multiple quantum emitters in active cavities are usually positioned in a random fashion, which can make backscattering very difficult to control. As a result, the researchers said, it is hard to achieve a coherent interface between electrons and photons. The researchers devised a system of coupled microdisks with embedded quantum dots (QDs). By exciting the QDs with a laser, the researchers were able to...