Title:
Single-Photon Emission From Single-Electron Transport in a Saw-Driven Lateral Light-Emitting Diode
Single-Photon Emission From Single-Electron Transport in a Saw-Driven Lateral Light-Emitting Diode
Speaker:
蕭子綱 (Tzu-Kan Hsiao), PhD, Delft University of Technology
蕭子綱 (Tzu-Kan Hsiao), PhD, Delft University of Technology
Time:
04/11 (Sat.) 11 am PDT, 12 pm MDT, 1 pm CDT, 2 pm EDT
04/12 (Sun.) 2 am Taiwan
04/11 (Sat.) 11 am PDT, 12 pm MDT, 1 pm CDT, 2 pm EDT
04/12 (Sun.) 2 am Taiwan
Keywords:
Physics, Quantum information, Quantum communication, Semiconductor physics, Surface acoustic wave
Physics, Quantum information, Quantum communication, Semiconductor physics, Surface acoustic wave
Abstract:
The long-distance quantum transfer between electron-spin qubits in semiconductors is important for realising large-scale quantum computing circuits. Electron-spin to photon-polarisation conversion is a promising technology for achieving free-space or fibre-coupled quantum transfer. In this work, using only regular lithography techniques on a conventional 15 nm GaAs quantum well, we demonstrate acoustically-driven generation of single photons from single electrons, without the need for a self-assembled quantum dot. In this device, a single electron is carried in a potential minimum of a surface acoustic wave (SAW) and is transported to a region of holes to form an exciton. The exciton then decays and creates a single optical photon within 100 ps. Our work marks the first step towards electron-to-photon (spin-to-polarisation) qubit conversion for scalable quantum computing architectures.
The long-distance quantum transfer between electron-spin qubits in semiconductors is important for realising large-scale quantum computing circuits. Electron-spin to photon-polarisation conversion is a promising technology for achieving free-space or fibre-coupled quantum transfer. In this work, using only regular lithography techniques on a conventional 15 nm GaAs quantum well, we demonstrate acoustically-driven generation of single photons from single electrons, without the need for a self-assembled quantum dot. In this device, a single electron is carried in a potential minimum of a surface acoustic wave (SAW) and is transported to a region of holes to form an exciton. The exciton then decays and creates a single optical photon within 100 ps. Our work marks the first step towards electron-to-photon (spin-to-polarisation) qubit conversion for scalable quantum computing architectures.
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