Erin Knuston: Seeded and unseeded four-output four-wave mixing

Abstract: We demonstrate unseeded multimode four-wave mixing wherein each created photon is correlated to exactly two others, resulting in an “optimal” four-mode output. The generated beams are spatially separated, readily allowing for use in optical communications protocols. We also show preliminary results of seeding the configuration to achieve a phase-sensitive amplifier without homodyning or cascading and with only two input frequencies.