High-performance Semiconductor Quantum Light Sources

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• Dr Jin Liu
• Friday 13 September 2024, 15:00-16:00
• Maxwell Centre, Rayleigh Seminar Room.

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Abstract 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 imaging¹. 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], chip-scale light sources carrying orbital angular momentum [4,5] and stimulated emission assisted single-photon sources [6]. We finally envision long-distance quantum networks based on telecom band QDs via hybrid integration technology [7].

This talk is part of the AMOP list series.

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