Nanocavity enhanced photon coherence of solid-state quantum emitters operating up to 30 K
| Autor: | Brash, Alistair J., Iles-Smith, Jake |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Materials for Quantum Technology 3 045001 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/2633-4356/acf5c0 |
| Popis: | Solid-state emitters such as epitaxial quantum dots have emerged as a leading platform for efficient, on-demand sources of indistinguishable photons, a key resource for many optical quantum technologies. To maximise performance, these sources normally operate at liquid helium temperatures ($\sim 4~\mathrm{K}$), introducing significant size, weight and power requirements that can be impractical for proposed applications. Here we experimentally resolve the two distinct temperature-dependent phonon interactions that degrade indistinguishability, allowing us to demonstrate that coupling to a photonic nanocavity can greatly improve photon coherence at elevated temperatures up to $30~\mathrm{K}$ that are compatible with compact cryocoolers. We derive a polaron model that fully captures the temperature-dependent influence of phonons observed in our experiments, providing predictive power to further increase the indistinguishability and operating temperature of future devices through optimised cavity parameters. Comment: 18 pages, 4 figures |
| Databáze: | arXiv |
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