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Interplay between spontaneous decay rates and Lamb shifts in open photonic systems
preprintposted on 2023-11-30, 05:36 authored by Emmanuel Lassalle, Nicolas Bonod, Thomas Durt, Brian Stout
In this letter, we describe the modified decay rate and photonic Lamb (frequency) shift of quantum emitters in terms of the resonant states of a neighboring photonic resonator. This description illustrates a fundamental distinction in the behaviors of closed (conservative) and open (dissipative) systems: the Lamb shift is bounded by the emission linewidth in closed systems while it overcomes this limit in open systems.