Semiconductor quantum emitters, especially epitaxial quantum dots (QDs) with large optical oscillator strength, are one of the most promising candidates for exploring fundamental quantum physics in solid-state and building quantum photonic devices on-chip. However, the deterministic creation and eventual scalability of single QD devices greatly suffer from the random nature of the QDs produced in their self-assembled growth. In this talk, I will present the breakthrough of scalable and deterministic light-matter couplings based on single-photon hyperspectral imaging[1]. With deterministically coupled QD-microcavity systems, we’ve observed the long-sought-after dynamic resonance fluorescence in cavity quantum electrodynamics [2] and realized quantum photonic devices with state-of-the-art performances, including bright sources of entangled photon pairs [3], single-photon sources carrying orbital angular momentum [4], stimulated emission assisted single-photon sources [5] and on-chip pumped single-photon sources [6]. We finally envision long-distance quantum networks based on telecom band QDs via hybrid integration technology [7].

[1] arXiv 2311.02626. Nature Photon (2024). In press.

[2] Nature Photon. 18 318 (2024).

[3] Nature Nano. 14 586 (2019).

[4] Nature Nano. 16 302 (2021).

[5] Nature Nano. 17 470 (2022).

[6] Light Sci. Appl. 12 65 (2023).

[7] Nature Nano. 18 1389 (2023).