A cavity quantum electrodynamics system consisting of quantum dots in a micropillar cavity may form an essential building block for the creation of a quantum network. Current systems do not allow...Show moreA cavity quantum electrodynamics system consisting of quantum dots in a micropillar cavity may form an essential building block for the creation of a quantum network. Current systems do not allow for the scaling, in a simple manner, to a large network. Therefore, we introduce a scalable approach by coupling a micropillar cavity to single-mode fibers. The steps taken to achieve the fiber coupling are explained and the first tests for researching a fiber coupled cavity quantum electrodynamics system are shown. The first tests show that full input-output fiber based polarization control of a micropillar cavity at 3.5 K is possible which is important for a photon polarization based quantum network. Several experimental challenges are shown and discussed. Despite the experimental challenges, the first tests may pave the way for a more scalable approach for building a large-scale quantum network.Show less
We investigated the largely unknown spectroscopic properties silicon nitride implanted with trivalent ytterbium ions. We found that annealing the implanted silicon nitride samples is essential to...Show moreWe investigated the largely unknown spectroscopic properties silicon nitride implanted with trivalent ytterbium ions. We found that annealing the implanted silicon nitride samples is essential to see the characteristic 980 nm Yb3+ peak in the photoluminescence spectrum. We also notice that the peak we measured in our spectrum is redshifted by 5 nm compared to other host materials, which is to be expected. Additionally, in our spectrum we measure a background that seems to be intrinsic to the host material or due to implantation damage, yet the exact cause is still to be found. We also estimated the density of excited Yb3+ in our samples which differed two orders of magnitude from our Yb implantation density which we deem a realistic result.Show less
