2019/10/13 by Xiaoyan Zhou, Ravitej Uppu, Zhou, Xiaoyan +16 · 4 citations
Computer Science · Engineering · Physics and Astronomy · #Applied Physics (physics.app-ph) #Common emitter #Electrical engineering #Engineering #FOS: Physical sciences #Filter (signal processing) #Mechanical and Optical Resonators #Neural Networks and Reservoir Computing #Optical filter #Optics #Optics (physics.optics) #Optoelectronics #Photon #Photonic and Optical Devices #Photonic integrated circuit #Photonics #Physics #Quantum #Quantum Physics (quant-ph) #Quantum dot #Quantum imaging #Quantum information #Quantum mechanics #Quantum network #physics.app-ph #physics.optics #quant-ph
paper · pdf · doi:10.48550/arxiv.1910.05785
published in arXiv (Cornell University) (Cornell University)
arxiv created 2019/10/13 · openalex publication_date 2019/10/13 · arxiv updated 2019/10/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Semiconductor quantum dots in photonic integrated circuits enable scaling quantum-information processing to many single photons and quantum-optical gates. On-chip spectral filters are essential to achieve high-purity and coherent photon emission from quantum dots embedded in waveguides, without resorting to free-space optics. Such spectral filters should be tunable, to compensate for the inhomogeneous spectral distribution of the quantum dots transitions. Here, we report an on-chip filter monolithically integrated with quantum dots, that uses nanomechanical motion for tuning its resonant wavelength over 10 nm, enabling operation at cryogenic temperatures and avoiding cross-talk with the emitter. We demonstrate single-photon emission from a quantum dot under non-resonant excitation by employing only the on-chip filter. These results are key for the development of fully-integrated de-multiplexing, multi-path photon encoding schemes, and multi-emitter circuits.