In Step Toward Quantum Networking, Penn Study Finds Quantum Light Pattern Can Survive Loss of Entanglement

Penn-led researchers used a photonic chip to transfer a winding pattern from one photon to a shared two-photon state, preserving the pattern under noise even after entanglement disappeared. The winding pattern remained stable as the quantum state deteriorated, supported by other quantum correlations, but broke down under sufficiently strong noise. The findings could one day be used in the development of more resilient quantum networks. University of Pennsylvania researchers have used a photonic chip to transfer a winding pattern in quantum light that survived noise even after entanglement disappeared, which they say could help develop quantum networks. Currently, scientists and engineers are exploring ways to create a quantum network that could, for example, connect two quantum computers in separate buildings so they can work together on a calculation. The team suggests this…