Effects of Imperfections on Quantum Algorithms: A Software Engineering Perspective
| Autor: | Greiwe, Felix, Krüger, Tom, Mauerer, Wolfgang |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Quantum computers promise considerable speedups over classical approaches, which has raised interest from many disciplines. Since any currently available implementations suffer from noise and imperfections, achieving concrete speedups for meaningful problem sizes remains a major challenge. Yet, imperfections and noise may remain present in quantum computing for a long while. Such limitations play no role in classical software computing, and software engineers are typically not well accustomed to considering such imperfections, albeit they substantially influence core properties of software and systems. In this paper, we show how to model imperfections with an approach tailored to (quantum) software engineers. We intuitively illustrate, using numerical simulations, how imperfections influence core properties of quantum algorithms on NISQ systems, and show possible options for tailoring future NISQ machines to improve system performance in a co-design approach. Our results are obtained from a software framework that we provide in form of an easy-to-use reproduction package. It does not require computer scientists to acquire deep physical knowledge on noise, yet provide tangible and intuitively accessible means of interpreting the influence of noise on common software quality and performance indicators. Comment: In Figure 5: 1. Remove first Rz layer to avoid confusion as it has non-effect on |0> input 2. Replace Rx by Rz in the parameterised layer (as it was already done in the code to obtain results) 3. Replace caption and description of figure 5. General: - Add additional source for Kraus Operator |
| Databáze: | arXiv |
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