Litcius/Paper detail

Optical coherent perfect absorption and amplification in a time-varying medium

E. Galiffi, Anthony Harwood, Stefano Vezzoli, Romain Tirole, Andrea Alù, Riccardo Sapienza

2026Nature Photonics8 citationsDOI

Topics & Concepts

Lasing thresholdPhotonicsOptoelectronicsAbsorption (acoustics)OpticsPhysicsMaterials scienceOptical amplifierModulation (music)LaserAmplifierOptical parametric amplifierOptical pumpingPhase (matter)Active laser mediumPhase modulationCoherent controlInterference (communication)IndiumRelative phaseParametric statisticsPermittivityAmplitude modulationOptical switchResonatorSlow lightQuantum amplifierNoise (video)Band gapOpacityDispersion (optics)Optical communicationSemiconductor laser theoryAmplified spontaneous emissionPlasmonMetamaterials and Metasurfaces ApplicationsQuantum Mechanics and Non-Hermitian PhysicsPhotonic Crystals and Applications