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Parallel trusted node approach for satellite quantum key distribution

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arxiv 2406.08562 v1 pith:7UTUNL4O submitted 2024-06-12 quant-ph

classification quant-ph
keywords distributionnodeparallelquantumsatellitetrustedapproachfully
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Quantum key distribution (QKD) via satellite links is the only currently viable solution to create quantum-backed secure communication at a global scale. To achieve intercontinental coverage with available technology one must adopt a "flying trusted node" paradigm, in which users fully trust the satellite platform. Here, inspired by the concept of distributed secret sharing and the imminent projected launch of several QKD-equipped satellites, we propose a parallel trusted node approach, in which key distribution is mediated by several satellites in parallel. This has the effect of distributing the trust, removing single points of failure and reducing the necessary assumptions. In addition, we discuss the versatility that an optical ground station should provide to execute such a protocol and, in general, to be fully integrated into a multi-party global quantum network.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The exact convex roof for GHZ-W mixtures for three qubits and beyond

    quant-ph 2025-01 conditional novelty 6.0 of 10

    The convex roof of the square root of the three-tangle is solved exactly for all GHZ-W mixtures of three qubits, using a new zero-state locking theorem.

  2. Versatile Optical Ground Station for Satellite-based Quantum Key Distribution in Abu Dhabi

    quant-ph 2024-12 conditional novelty 4.0 of 10

    The paper describes the design and preliminary testing of the Abu Dhabi Quantum Optical Ground Station, a modular multi-wavelength receiver for satellite-based quantum key distribution.

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