Quantum Interface for Telecom Ultrafast and Nanosecond Light Pulses

Sośnicki, Filip; Mikołajczyk, Michał; Golestani, Ali; Szuniewicz, J.; Widomski, Adam; Karpiński, Michał

doi:10.1364/cleo_qels.2022.ff3k.2

Cited by 1 publication

(1 citation statement)

References 6 publications

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“…In contrast, the epitaxial growth of NW-QDs results in a standard deviation of approximately 5 nm (∼6 meV) or more in the emission wavelengths and linewidths ranging from ∼GHz to ∼300 MHz for state-of-the-art NW-QDs [6,7]. While the linewidth issue can be addressed by using atomic ensembles with sufficiently large optical depths and with efforts to narrow the emission linewidth of the quantum dot [8] or possibly by shaping the emitted photons [9], an in-situ, precise and broad-range tuning method for the quantum dot is necessary to properly match the frequency of the produced photons with the atomic transitions involved.…”

Section: Articlementioning

confidence: 99%

Widely tunable solid-state source of single-photons matching an atomic transition

Maruf,

Venuturumilli,

Bharadwaj

et al. 2023

Preprint

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Hybrid quantum technologies aim to combine diverse quantum systems, mirroring classical computers' integration of electronic, photonic, magnetic, and mechanical components. Quantum dots in semiconductor nanowires emit high-purity, deterministic single photons with high repetition, while atomic ensembles offer photon storage and strong optical nonlinearities controllable by single photons. To interface quantum dots with atomic ensembles successfully, precise optical frequency matching of these two platforms is crucial. We demonstrate a simple, precise, reversible, broad-range, and local method for controlling the emission frequency of individual quantum dots embedded in tapered semiconductor nanowires. We then interface the quantum dots with an atomic ensemble via single-photons matched to hyperfine transitions and slow-light regions of the cesium D1-line. Our approach allows linking atomic and solid-state quantum systems and can potentially also be applied to other types of nanowire-embedded solid-state emitters, as well as for creating devices based on multiple solid-state emitters tuned to produce indistinguishable photons.

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