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EntangleGen SIGNED

Entanglement Generation in Universal Quantum Dynamics

Total Cost €


EC-Contrib. €






Project "EntangleGen" data sheet

The following table provides information about the project.


Organization address
postcode: 69117

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Total cost 2˙390˙000 €
 EC max contribution 2˙390˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-AdG
 Funding Scheme ERC-ADG
 Starting year 2016
 Duration (year-month-day) from 2016-10-01   to  2021-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

A paradigm example of precise predictions in complex systems is the universal scaling of correlation functions close to phase transitions, with their associated critical exponents. The extension of this concept to time dependent problems has been studied in the classical regime as well as in the quantum regime. A clean experimental confirmation of this prediction in a quantum system as well as of its connection to non-local entanglement generation is the defined goal of this project. The experimental system builds on atomic Bose-Einstein condensates with precisely controlled internal degrees of freedom. Their physics can be mapped onto extensively studied spin systems in the large-collective-spin limit. While the mean evolution of these large spins is well captured by classical descriptions, the detailed study of the fluctuations can reveal particle entanglement. The technology for such high-precision measurements has been pioneered by the PI, demonstrating entanglement in spin-squeezed as well as non-gaussian entangled states. In this project one-dimensional gases will be realized allowing for the implementation of a spin system revealing a quantum phase transition. While the spatial spin-spin correlation functions can already be detected, the future experimental development concerns the implementation of non-demolition/weak measurements of the spin degree of freedom. This makes time-time and time-space correlation functions for the first time accessible, as a necessary prerequisite for the envisaged studies of universal dynamics out of equilibrium and the experimental confirmation of non-local entanglement. Observation of scale invariance in the then available full correlation landscape will allow the verification of the presence of a non-thermal fixed point. The successful demonstration will lead to a paradigm shift in the description of quantum dynamics in complex systems and will also open up new routes for generating quantum resources for quantum metrology.


year authors and title journal last update
List of publications.
2019 Zhongyi Feng, Pascal Bohleber, Sven Ebser, Lisa Ringena, Maximilian Schmidt, Arne Kersting, Philip Hopkins, Helene Hoffmann, Andrea Fischer, Werner Aeschbach, Markus K. Oberthaler
Dating glacier ice of the last millennium by quantum technology
published pages: 8781-8786, ISSN: 0027-8424, DOI: 10.1073/pnas.1816468116
Proceedings of the National Academy of Sciences 116/18 2019-10-29
2019 Philipp Kunkel, Maximilian Prüfer, Stefan Lannig, Rodrigo Rosa-Medina, Alexis Bonnin, Martin Gärttner, Helmut Strobel, Markus K. Oberthaler
Simultaneous Readout of Noncommuting Collective Spin Observables beyond the Standard Quantum Limit
published pages: , ISSN: 0031-9007, DOI: 10.1103/physrevlett.123.063603
Physical Review Letters 123/6 2019-10-29
2018 Sven Ebser, Arne Kersting, Tim Stöven, Zhongyi Feng, Lisa Ringena, Maximilian Schmidt, Toste Tanhua, Werner Aeschbach, Markus K. Oberthaler
39Ar dating with small samples provides new key constraints on ocean ventilation
published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-018-07465-7
Nature Communications 9/1 2019-10-09
2017 V Kasper, F Hebenstreit, F Jendrzejewski, M K Oberthaler, J Berges
Implementing quantum electrodynamics with ultracold atomic systems
published pages: 23030, ISSN: 1367-2630, DOI: 10.1088/1367-2630/aa54e0
New Journal of Physics 19/2 2019-06-13
2017 Markus Karl, Halil Cakir, Jad C. Halimeh, Markus K. Oberthaler, Michael Kastner, Thomas Gasenzer
Universal equilibrium scaling functions at short times after a quench
published pages: , ISSN: 2470-0045, DOI: 10.1103/PhysRevE.96.022110
Physical Review E 96/2 2019-06-13
2016 V. Kasper, F. Hebenstreit, M.K. Oberthaler, J. Berges
Schwinger pair production with ultracold atoms
published pages: 742-746, ISSN: 0370-2693, DOI: 10.1016/j.physletb.2016.07.036
Physics Letters B 760 2019-06-13
2017 D Linnemann, J Schulz, W Muessel, P Kunkel, M Prüfer, A Frölian, H Strobel, M K Oberthaler
Active SU(1,1) atom interferometry
published pages: 44009, ISSN: 2058-9565, DOI: 10.1088/2058-9565/aa802c
Quantum Science and Technology 2/4 2019-06-13
2017 Z. Feng, S. Ebser, L. Ringena, F. Ritterbusch, M. K. Oberthaler
Bichromatic force on metastable argon for atom-trap trace analysis
published pages: , ISSN: 2469-9926, DOI: 10.1103/physreva.96.013424
Physical Review A 96/1 2019-06-13

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