Digital quantum simulation, Trotter errors, and quantum chaos of the kicked top
This work aims at giving Trotter errors in digital quantum simulation (DQS) of collective spin systems an interpretation in terms of quantum chaos of the kicked top. In particular, for DQS of such systems, regular dynamics of the kicked top ensures convergence of the Trotterized time evolution, whil...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
20 September 2019
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| In: |
npj Quantum information
Year: 2019, Volume: 5 |
| ISSN: | 2056-6387 |
| DOI: | 10.1038/s41534-019-0192-5 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1038/s41534-019-0192-5 Verlag: https://www.nature.com/articles/s41534-019-0192-5 
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| Author Notes: | Lukas M. Sieberer, Tobias Olsacher, Andreas Elben, Markus Heyl, Philipp Hauke, Fritz Haake and Peter Zoller |
| Summary: | This work aims at giving Trotter errors in digital quantum simulation (DQS) of collective spin systems an interpretation in terms of quantum chaos of the kicked top. In particular, for DQS of such systems, regular dynamics of the kicked top ensures convergence of the Trotterized time evolution, while chaos in the top, which sets in above a sharp threshold value of the Trotter step size, corresponds to the proliferation of Trotter errors. We show the possibility to analyze this phenomenology in a wide variety of experimental realizations of the kicked top, ranging from single atomic spins to trapped-ion quantum simulators which implement DQS of all-to-all interacting spin-1/2 systems. These platforms thus enable in-depth studies of Trotter errors and their relation to signatures of quantum chaos, including the growth of out-of-time-ordered correlators. |
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| Item Description: | Gesehen am 29.10.2019 |
| Physical Description: | Online Resource |
| ISSN: | 2056-6387 |
| DOI: | 10.1038/s41534-019-0192-5 |