Print Email Facebook Twitter Optimizing repeater schemes for the quantum internet Title Optimizing repeater schemes for the quantum internet Author Goodenough, K.D. (TU Delft QID/Wehner Group; TU Delft QuTech Advanced Research Centre) Elkouss Coronas, D. (TU Delft Quantum Information and Software; TU Delft QuTech Advanced Research Centre) Wehner, S.D.C. (TU Delft QuTech Advanced Research Centre; TU Delft Quantum Internet Division; TU Delft Quantum Information and Software; Kavli institute of nanoscience Delft) Department Quantum Internet Division Date 2021 Abstract The rate at which quantum communication tasks can be performed using direct transmission is fundamentally hindered by the channel loss. Quantum repeaters allow one, in principle, to overcome these limitations, but their introduction necessarily adds an additional layer of complexity to the distribution of entanglement. This additional complexity - along with the stochastic nature of processes such as entanglement generation, Bell swaps, and entanglement distillation - makes finding good quantum repeater schemes nontrivial. We develop an algorithm that can efficiently perform a heuristic optimization over a subset of quantum repeater schemes for general repeater platforms. We find a strong improvement in the generation rate in comparison to an optimization over a simpler class of repeater schemes based on BDCZ (Briegel, Dür, Cirac, Zoller) repeater schemes. We use the algorithm to study three different experimental quantum repeater implementations on their ability to distribute entanglement, which we dub information processing implementations, multiplexed elementary pair generation implementations, and combinations of the two. We perform this heuristic optimization of repeater schemes for each of these implementations for a wide range of parameters and different experimental settings. This allows us to make estimates on what are the most critical parameters to improve for entanglement generation, how many repeaters to use, and which implementations perform best in their ability to generate entanglement. To reference this document use: http://resolver.tudelft.nl/uuid:b81c8f17-c605-4bcc-9647-5e11646c5137 DOI https://doi.org/10.1103/PhysRevA.103.032610 ISSN 2469-9926 Source Physical Review A: covering atomic, molecular, and optical physics and quantum information, 103 (3) Part of collection Institutional Repository Document type journal article Rights © 2021 K.D. Goodenough, D. Elkouss Coronas, S.D.C. Wehner Files PDF PhysRevA.103.032610.pdf 3.45 MB Close viewer /islandora/object/uuid:b81c8f17-c605-4bcc-9647-5e11646c5137/datastream/OBJ/view