Non-Markovian spontaneous emission dynamics of a quantum emitter near a MoS${}_2$ nanodisk

Abstract

We introduce a photonic nanostructure made of two dimensional materials that can lead to non-Markovian dynamics in the spontaneous emission of a nearby quantum emitter. Specifically, we investigate the spontaneous emission dynamics of a two-level quantum emitter with picosecond free-space decay time, modelling J-aggregates, close to a MoS${}_2$ nanodisk. Reversible population dynamics in the quantum emitter is obtained when the emitter's frequency matches the frequency of an exciton-polariton resonance created by the nanodisk. When such isolated resonances exist, decaying Rabi oscillations may occur. The overlapping of exciton-polariton resonances also affects strongly the decay dynamics at close distances to the nanodisk, giving rise to complex decaying population oscillations. At very close distances of the emitter to the nanodisk the ultrastrong coupling regime appears, where after a very fast oscillatory partial decay of the initial population, the emitter rest population remains constant over long times and population trapping occurs. The size and material quality of the nanodisk is shown to be of lesser influence on the above results.

Physical Review B, in press

References in corpus (6)

• k.p theory for two-dimensional transition metal dichalcogenide semiconductors
• Reduced dielectric screening and enhanced energy transfer in single and few-layer MoS2
• Observation of non-Markovian dynamics of a single quantum dot in a micropillar cavity
• Non-Markovian dynamics in plasmon-induced spontaneous emission interference
• Spontaneous decay dynamics in atomically doped carbon nanotubes
• Near-field relaxation of a quantum emitter to 2D semiconductors: surface dissipation and exciton polaritons

Cited by in corpus (5)

• Collective radiation from distant emitters
• Quantum surface effects in strong coupling dynamics
• Strong coupling of quantum emitters and the exciton polariton in MoS${}_2$ nanodisks
• Unitary Evolutions Sourced By Interacting Quantum Memories: Closed Quantum Systems Directing Themselves Using Their State Histories
• From Superradiance to Superabsorption: An Exact Treatment of Non-Markovian Cooperative Radiation