Researchers at NIST have developed a new method to create entangled photon pairs made up of one visible-light and one near-infrared photon using chip-based optical components. These photon pairs can interact with quantum memory systems while the near-infrared members can travel long distances through optical fibers. The achievement could boost the ability of light-based circuits to securely transmit information over long distances.
The NIST team demonstrated quantum correlation using a specific pair of visible-light and near-infrared photons, but their design methods can be applied to create many other tailored pairs. The miniature optical components used are mass-produced, making the technology scalable. The research was published in Nature Physics.
Source: https://www.nist.gov/news-events/news/2019/02/entangling-photons-different-colors
Keywords: Entanglement, Quantum correlation, Photon pairs, Quantum communication, Telecommunication photons
