2016/10/20 by Giulia Frucci, G. Frucci, Frucci, Giulia +16
Engineering · Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optics (physics.optics) #Photonic and Optical Devices #Quantum Physics (quant-ph) #Quantum optics and atomic interactions #Semiconductor Lasers and Optical Devices #cond-mat.mes-hall #physics.optics #quant-ph
paper · pdf · doi:10.48550/arxiv.1610.06391
arxiv created 2016/10/20 · openalex publication_date 2016/10/20 · arxiv updated 2016/10/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Single photon superradiance is a strong enhancement of spontaneous emission appearing when a single excitation is shared between a large number of two-level systems. This enhanced rate can be accompanied by a shift of the emission frequency, the cooperative Lamb shift, issued from the exchange of virtual photons between the emitters. In this work we present a semiconductor optoelectronic device allowing the observation of these two phenomena at room temperature. We demonstrate experimentally and theoretically that plasma oscillations in spatially separated quantum wells interact through real and virtual photon exchange. This gives rise to a superradiant mode displaying a large cooperative Lamb shift.