Abstract
How can we detect that our local, controllable quantum system is correlated with some other inaccessible environmental system? The local detection method developed in recent years allows to realize a dynamical witness for correlations without requiring knowledge of or access to the environment that is correlated with the local accessible quantum system. Here, we provide a brief summary of the theoretical method and recent experimental studies with single photons and trapped ions coupled to increasingly complex environments.
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Acknowledgements
This work was funded by the LabEx ENS-ICFP:ANR-10-LABX-0010/ANR-10-IDEX-0001-02 PSL*. M. Gessner would like to thank the organizers of the 684. WE-Heraeus-Seminar “Advances in open systems and fundamental tests of quantum mechanics” for being given the opportunity to present this work.
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Gessner, M., Breuer, HP. (2019). Revealing Correlations Between a System and an Inaccessible Environment. In: Vacchini, B., Breuer, HP., Bassi, A. (eds) Advances in Open Systems and Fundamental Tests of Quantum Mechanics. Springer Proceedings in Physics, vol 237. Springer, Cham. https://doi.org/10.1007/978-3-030-31146-9_5
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