Coherent diffusive photon gun for generating nonclassical states

Matthew Thornton, Anton Sakovich, Alexander Mikhalychev, Jesus Diaz Ferrer, Pablo de la Hoz, Natalia Korolkova, Dmitri Mogilevtsev

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We suggest and discuss a concept of a deterministic integrated source of nonclassical light based on the coherent diffusive photonics, a coherent light flow in a system of dissipatively coupled waveguides. We show how this practical quantum device can be realized with a system of single-mode waveguides laser inscribed in nonlinear glass. We describe a hierarchy of models, from the complete multimode model of the waveguide network to the single mode coupled to a bath, analyze the conditions for validity of the simplest single-mode model and demonstrate feasibility of the generation of bright sub-Poissonian light states merely from a coherent input. Notably, the generation of nonclassical states occurs at the initial stages of the dynamics, and can be accounted for in the linear model that allows us to circumvent the prohibiting computational complexity of the exact full quantum representation.
Original languageEnglish
Article number064051
Number of pages16
JournalPhysical Review Applied
Issue number6
Early online date23 Dec 2019
Publication statusPublished - Dec 2019


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