Classical-to-quantum transition in multimode nonlinear systems with strong photon-photon coupling
Classical-to-quantum transition in multimode nonlinear systems with strong photon-photon coupling
With advanced micro- and nanophotonic structures, the vacuum photon-photon coupling rate is anticipated to approach the intrinsic loss rate and lead to unconventional quantum effects. Here, we investigate the classical-to-quantum transition of such photonic nonlinear systems using the quantum cluster-expansion method, which addresses the computational challenge in tracking large photon …