Non-Markovian delay in the formation of coherence in quantum-dot nanolasers operating in the cavity-QED regime

摘要

THE quest for miniaturization of integrable optoelectronic devices has led to the development of smaller and smaller nanolasers. Optical microcavities are used to confine the electromagnetic field on the extent of the wavelength itself, culminating in photonic-crystal cavities that combine small mode volumes with long storage time of photons. The small mode volume in particular puts a limit on the amount of gain material that can be brought in spatial overlap with the mode. In order to acquire sufficient gain to sustain lasing operation, spontaneous emission itself is enhanced via the Purcell effect, pushing the concept of lasing into a quantum-cavity-QED regime that is governed by correlation and fluctuation effects.