Abstract
We describe a general analytical framework of a nanoplasmonic cavity-emitter system interacting with a dielectric photonic waveguide. Taking into account emitter quenching and dephasing, our model directly reveals the single-photon extraction efficiency as well as the indistinguishability of photons coupled into the waveguide mode. Rather than minimizing the cavity modal volume, our analysis predicts an optimum modal volume to maximize that balances waveguide coupling and spontaneous emission rate enhancement. Surprisingly, our model predicts that near-unity indistinguishability is possible, but this requires a much smaller modal volume, implying a fundamental performance trade-off between high and at room temperature. Finally, we show that maximizing requires that the system has to be driven in the weak coupling regime because quenching effects and decreased waveguide coupling drastically reduce in the strong coupling regime.
- Received 10 September 2017
- Revised 9 November 2017
- Corrected 5 January 2018
DOI:https://doi.org/10.1103/PhysRevB.96.235151
©2017 American Physical Society
Physics Subject Headings (PhySH)
Corrections
5 January 2018