NET4IQ · Network Techniques for Interaction Quenches
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2016-10-01 → 2018-09-30
- EU contribution
- €183,455
- Participants
- 1
- Scheme
- MSCA-IF
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Results in brief
Network Techniques for Interaction Quenches
With NET4IQ we focused on the study of the out-of-equilibrium dynamics of closed quantum systems via both analytical techniques and new advanced numerical methods. We used improved numerical algorithms to address some of the most important open questions regarding the dynamics of 1D integrable and nonintegrable quantum models: (1) How thermalisation (or generalised thermalisation) occurs at late time. (2) How to characterise transport phenomena after geometric quantum quenches in integrable models. (3) How conserved quantities may be encoded into state-of-the-art algorithms. The importance of our findings is mainly related on having understood the mechanisms which determin/constraint the dynamics governing the spreading of information during the unitary time evolution in quantum 1D systems. This is mainly at the basis of the manipulation of the quantum coherence and, in the long run, may foundamentally contribute in the improving of quantum computing, and within the framework of the quantum technologies, in the realization of a quantum simulator.
Data: CORDIS, © European Union
Project objective
Understanding the universal features of the non-equilibrium dynamics of strongly interacting one-dimensional quantum many-body systems is one of the most challenging and intriguing aspect of the recent researches in the broad domain of the quantum many-particle physics.In this project one merges analytical with numerical methods in order to explore the exotic behavior of interacting quantum models when brought out-of-equilibrium.Indeed, although the equilibrium properties of quantum systems could be understoodin terms of standard approaches, away from the equilibrium a complete understanding is still missing.In particular, the project aims to fill the lack of knowledge still present in this exciting domain, pursuing two main ideas: (i) The development of new numerical methods based on tensor-networktechniques, so as to explore the post-quench dynamics in closed quantum systems; with a special attention to the very recent continuous version of such algorithms.(ii) A better theoretical understanding (strongly supported by the numerical approach in (i)) of the effects of symmetry breaking, interactions and integrability, in the non-equilibrium dynamics; especially with respect to the non-equilibrium transport of energy and particle throughout the systems as well asa universal description of the stationary states (both equilibrium and non-equilibrium) that emerge at late times. Beside its conceptual importance, a complete universal characterization of the non-equilibrium dynamicsof 1D quantum systems will have various application in quantum engineering, being acrucial step forward to construct a quantum computer.
Original text from CORDIS.
Participants
- THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD · OxfordCoordinatorUnited Kingdom
Links
Data: CORDIS, © European Union