Independent electrical control of two quantum dots coupled through a photonic-crystal waveguide

• URL: http://arxiv.org/abs/2303.00345v2
• Date: Fri, 3 Mar 2023 09:21:43 GMT
• Title: Independent electrical control of two quantum dots coupled through a photonic-crystal waveguide
• Authors: Xiao-Liu Chu, Camille Papon, Nikolai Bart, Andreas D. Wieck, Arne Ludwig, Leonardo Midolo, Nir Rotenberg, Peter Lodahl
• Abstract summary: Two semiconductor quantum dot emitters are efficiently coupled to a photonic-crystal waveguide. We exploit the single-photon stream from one quantum dot to perform spectroscopy on the second quantum dot positioned 16$mu$m away in the waveguide.
• Score: 0.49252227263015774
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Efficient light-matter interaction at the single-photon level is of fundamental importance in emerging photonic quantum technology. A fundamental challenge is addressing multiple quantum emitters at once, as intrinsic inhomogeneities of solid-state platforms require individual tuning of each emitter. We present the realization of two semiconductor quantum dot emitters that are efficiently coupled to a photonic-crystal waveguide and individually controllable by applying a local electric Stark field. We present resonant transmission and fluorescence spectra in order to probe the coupling of the two emitters to the waveguide. We exploit the single-photon stream from one quantum dot to perform spectroscopy on the second quantum dot positioned 16$\mu$m away in the waveguide. Furthermore, power-dependent resonant transmission measurements reveals signatures of coherent coupling between the emitters. Our work provides a scalable route to realizing multi-emitter collective coupling, which has inherently been missing for solid-state deterministic photon emitters.

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