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2021 | OriginalPaper | Chapter

OnCall Operator Scheduling for Satellites with Grover’s Algorithm

Authors : Antonius Scherer, Tobias Guggemos, Sophia Grundner-Culemann, Nikolas Pomplun, Sven Prüfer, Andreas Spörl

Published in: Computational Science – ICCS 2021

Publisher: Springer International Publishing

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Abstract

The application of quantum algorithms on some problems in NP promises a significant reduction of time complexity. This work uses Grover’s Algorithm, designed to search an unstructured database with quadratic speedup, to find valid a solution for an instance of the on-call operator scheduling problem at the German Space Operation Center. We explore new approaches in encoding the problem and construct the Grover oracle automatically from the given constraints and independent of the problem size. Our solution is not designed for currently available quantum chips but aims to scale with their growth in the next years.

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Footnotes
1
This is needed e. g., for updating an on-call schedule during the year when operators have updated their vacations, for example. In this case only the future will be replanned, but the past may influence the applied constraints in the future.
 
2
The number of used qubits is given by the sum of counts of problem-encoding qubits, necessary global conflict counter register qubits and one Grover phase-flip qubit, so e. g., \(\log _2 4 \cdot 2\cdot 3+2+1=15\).
 
3
Except for Case V, where the approximations are not valid, but the exact formula reproduces the numbers given in the table.
 
4
Including qubit initialisation and measurement operations.
 
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Metadata
Title
OnCall Operator Scheduling for Satellites with Grover’s Algorithm
Authors
Antonius Scherer
Tobias Guggemos
Sophia Grundner-Culemann
Nikolas Pomplun
Sven Prüfer
Andreas Spörl
Copyright Year
2021
DOI
https://doi.org/10.1007/978-3-030-77980-1_2

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