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- W4286588281 abstract "This work examines secret key rates of key distribution based on quantum repeaters in a broad parameter space of the communication distance and coherence time of the quantum memories. As the first step in this task, a Markov decision process modeling the distribution of entangled quantum states via quantum repeaters is developed. Based on this model, a simulation is implemented, which is employed to determine secret key rates under naively controlled, limited memory storage times for a wide range of parameters. The complexity of the quantum state evolution in a multiple-segment quantum repeater chain motivates the use of deep reinforcement learning to search for optimal solutions for the memory storage time limits - the so-called memory cut-offs. The novel contribution in this work is to explore very general cut-off strategies which dynamically adapt to the state of the quantum repeater. An implementation of this approach is presented, with a particular focus on four-segment quantum repeaters, achieving proof of concept of its validity by finding exemplary solutions that outperform the naive strategies." @default.
- W4286588281 created "2022-07-22" @default.
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- W4286588281 date "2022-07-20" @default.
- W4286588281 modified "2023-09-27" @default.
- W4286588281 title "Deep reinforcement learning for key distribution based on quantum repeaters" @default.
- W4286588281 doi "https://doi.org/10.48550/arxiv.2207.09930" @default.
- W4286588281 hasPublicationYear "2022" @default.
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