Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session P27: Non-Equilibrium Physics in AMO Systems I: Quenches and Thermalization
2:30 PM–5:30 PM,
Wednesday, March 7, 2018
LACC
Room: 404B
Sponsoring
Units:
DAMOP DCOMP
Chair: Nikolai Sinitsyn, Los Alamos National Laboratory
Abstract ID: BAPS.2018.MAR.P27.1
Abstract: P27.00001 : Recurrences in an isolated quantum many-body system*
2:30 PM–3:06 PM
Presenter:
Joerg Schmiedmayer
(Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien)
Author:
Joerg Schmiedmayer
(Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien)
In general the complexity of interacting many-body systems prevent the observation of recurrences of quantum states for all but the smallest systems, even if completely isolated from the environement. For large systems one cannot access the full complexity of the quantum states and the requirements to observe a recurrence in experiments reduces to being close to the initial state with respect to the employed observable. Selecting an observable connected to the collective excitations in one-dimensional super-fluids, we demonstrate recurrences of coherence and long range order in an interacting quantum many-body system containing thousands of particles. This opens up a new window into the dynamics of large quantum systems even after they reached a transient thermal-like state.
In the context of Quantum Thermodynamics and building Quantum Machines our experiments offer a direct way for designing a reservoir, that can either look Markovian and classical, and at later time strongly non-Markovian, remembering all the quantum correlations written into it by the last operation of the quantum machine.
[1] M. Gring et al., Science, 337, 1318 (2012); T. Langen et al., Nature Physics, 9, 640–643 (2013).
[2] T. Langen et al., Science 348, 207-211 (2015).
[3] B. Rauer et al. arXiv:1705.08231
*Supported by the DFG/FWF: SFB ISOQUANT and the EU through the ERC-AdG QuantumRelax
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.P27.1
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