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Showing 1–5 of 5 results
Advanced filters: Author: Natasha Tomm Clear advanced filters

  • Measurements on a single artificial atom—a quantum dot—coupled to an optical cavity show scattering dynamics that depend on the number of photons involved in the light–matter interaction, which is a signature of stimulated emission.

    • Natasha Tomm
    • Sahand Mahmoodian
    • Richard J. Warburton
    ResearchOpen Access
    Nature Physics
    Volume: 19, P: 857-862

  • Erbium quantum emitters operating in the telecom C band are promising for spin-photon interfaces but achieving both optical and spin coherence has been challenging. Gupta et al. report two types of erbium dopants in epitaxial Y2O3 thin films occupying distinct lattice sites and exhibiting long spin and optical coherence times

    • Shobhit Gupta
    • Yizhong Huang
    • Tian Zhong
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-9

  • High efficiency, coherence and indistinguishability are key requirements for the application of single-photon sources for quantum technologies, but hard to achieve concurrently. A gated quantum dot in an open, tunable microcavity now can create single photons on-demand with an end-to-end efficiency of 57%, preserving coherence over microsecond-long trains of single photons.

    • Natasha Tomm
    • Alisa Javadi
    • Richard John Warburton
    Research
    Nature Nanotechnology
    Volume: 16, P: 399-403

  • Single-shot readout of optically active spin qubits is typically limited by low photon collection rates and measurement back-action. Here the authors overcome these limitations by using an open cavity approach for single-shot readout of a semiconductor quantum dot and demonstrate record readout time of a few ns.

    • Nadia O. Antoniadis
    • Mark R. Hogg
    • Richard J. Warburton
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-7