Quantum non-Markovianity elusive to interventions

Daniel Burgarth, Paolo Facchi, Davide Lonigro, Kavan Modi

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)
59 Downloads (Pure)


The non-Markovian nature of open quantum dynamics lies in the structure of multitime correlations, which are accessible by means of interventions. Here, by examining multitime correlations, we show that it is possible to engineer non-Markovian systems with only long-term memory but seemingly no short-term memory, so that their non-Markovianity is completely nondetectable by any interventions up to an arbitrarily large time. Our results raise the question about the assessability of non-Markovianity: in principle, non-Markovian effects that are perfectly elusive to interventions may emerge at much later times.
Original languageEnglish
Article numberL050404
Pages (from-to)L050404-1-L050404-6
Number of pages6
JournalPhysical Review A
Issue number5
Publication statusPublished - 19 Nov 2021

Bibliographical note

Copyright 2021 American Physical Society. Firstly published in Physical Review A, 104(5), L050404. The original publication is available at https://doi.org/10.1103/PhysRevA.104.L050404. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.


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