Beyond Dicke Superradiance: Enhancing Radiative Scaling via Waveguide QED
Dicke superradiance, which enhances the collective atomic emission rate from linear N scaling to quadratic N2 scaling for an ensemble of N atoms, stands as a cornerstone in quantum optics. This phenomenon has found widespread applications in laser physics and quantum precision metrology. However, a natural question arises: Can the scaling of superradiance be further enhanced beyond the Dicke limit? In this talk, we introduce two effective strategies based on waveguide quantum electrodynamics (QED) to address this challenge. The first strategy leverages two-photon bound states in a nonlinear photonic waveguide to induce super-correlated radiance, achieving an enhanced scaling of N4. The second approach introduces a set of remotely controlled ancillary atoms that modulate the superradiant emission of the target atomic ensemble through engineered interference effects. This mechanism enables a tunable superradiance scaling of Nα where α>2.
王治海 教授(东北师范大学量子科学中心)
理工楼1226