Measuring out-of-time-ordered correlation functions without reversing time evolution

Research output: Contribution to journal › Journal article › Research › peer-review

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Measuring out-of-time-ordered correlation functions without reversing time evolution. / Blocher, Philip Daniel; Asaad, Serwan; Mourik, Vincent; Johnson, Mark A.; Morello, Andrea; Molmer, Klaus.

In: Physical Review A, Vol. 106, No. 4, 042429, 19.10.2022.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Blocher, PD, Asaad, S, Mourik, V, Johnson, MA, Morello, A & Molmer, K 2022, 'Measuring out-of-time-ordered correlation functions without reversing time evolution', Physical Review A, vol. 106, no. 4, 042429. https://doi.org/10.1103/PhysRevA.106.042429

APA

Blocher, P. D., Asaad, S., Mourik, V., Johnson, M. A., Morello, A., & Molmer, K. (2022). Measuring out-of-time-ordered correlation functions without reversing time evolution. Physical Review A, 106(4), [042429]. https://doi.org/10.1103/PhysRevA.106.042429

Vancouver

Blocher PD, Asaad S, Mourik V, Johnson MA, Morello A, Molmer K. Measuring out-of-time-ordered correlation functions without reversing time evolution. Physical Review A. 2022 Oct 19;106(4). 042429. https://doi.org/10.1103/PhysRevA.106.042429

Author

Blocher, Philip Daniel ; Asaad, Serwan ; Mourik, Vincent ; Johnson, Mark A. ; Morello, Andrea ; Molmer, Klaus. / Measuring out-of-time-ordered correlation functions without reversing time evolution. In: Physical Review A. 2022 ; Vol. 106, No. 4.

Bibtex

@article{13ca1b87e0cc48f581dac6fc96eff8a1,
title = "Measuring out-of-time-ordered correlation functions without reversing time evolution",
abstract = "Out-of-time-ordered correlation functions (OTOCs) play a crucial role in the study of thermalization, entanglement, and quantum chaos, as they quantify the scrambling of quantum information due to complex interactions. As a consequence of their out-of-time-ordered nature, OTOCs are difficult to measure experimentally. Here we propose an OTOC measurement protocol that does not rely on the reversal of time evolution and is easy to implement in a range of experimental settings. The protocol accounts for both pure and mixed initial states, and is applicable to systems that interact with environmental degrees of freedom. We demonstrate the application of our protocol by the characterization of scrambling in a periodically driven spin that exhibits quantum chaos.",
keywords = "QUANTUM CHAOS, DYNAMICS",
author = "Blocher, {Philip Daniel} and Serwan Asaad and Vincent Mourik and Johnson, {Mark A.} and Andrea Morello and Klaus Molmer",
year = "2022",
month = oct,
day = "19",
doi = "10.1103/PhysRevA.106.042429",
language = "English",
volume = "106",
journal = "Physical Review A - Atomic, Molecular, and Optical Physics",
issn = "1050-2947",
publisher = "American Physical Society",
number = "4",

}

RIS

TY - JOUR

T1 - Measuring out-of-time-ordered correlation functions without reversing time evolution

AU - Blocher, Philip Daniel

AU - Asaad, Serwan

AU - Mourik, Vincent

AU - Johnson, Mark A.

AU - Morello, Andrea

AU - Molmer, Klaus

PY - 2022/10/19

Y1 - 2022/10/19

N2 - Out-of-time-ordered correlation functions (OTOCs) play a crucial role in the study of thermalization, entanglement, and quantum chaos, as they quantify the scrambling of quantum information due to complex interactions. As a consequence of their out-of-time-ordered nature, OTOCs are difficult to measure experimentally. Here we propose an OTOC measurement protocol that does not rely on the reversal of time evolution and is easy to implement in a range of experimental settings. The protocol accounts for both pure and mixed initial states, and is applicable to systems that interact with environmental degrees of freedom. We demonstrate the application of our protocol by the characterization of scrambling in a periodically driven spin that exhibits quantum chaos.

AB - Out-of-time-ordered correlation functions (OTOCs) play a crucial role in the study of thermalization, entanglement, and quantum chaos, as they quantify the scrambling of quantum information due to complex interactions. As a consequence of their out-of-time-ordered nature, OTOCs are difficult to measure experimentally. Here we propose an OTOC measurement protocol that does not rely on the reversal of time evolution and is easy to implement in a range of experimental settings. The protocol accounts for both pure and mixed initial states, and is applicable to systems that interact with environmental degrees of freedom. We demonstrate the application of our protocol by the characterization of scrambling in a periodically driven spin that exhibits quantum chaos.

KW - QUANTUM CHAOS

KW - DYNAMICS

U2 - 10.1103/PhysRevA.106.042429

DO - 10.1103/PhysRevA.106.042429

M3 - Journal article

VL - 106

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 4

M1 - 042429

ER -

ID: 325332785