CondmatQTech · Creating and Stabilizing Quantum Resource Phases of Interacting Quantum Matter: The Equilibrium and Nonequilibrium Routes
Horizon Europe — Marie Skłodowska-Curie Actions
- Duration
- 2023-11-01 → 2025-10-31
- EU contribution
- €211,755
- Participants
- 2
- Scheme
- HORIZON-TMA-MSCA-PF-EF
Lines connect the coordinator with its partners.
Results in brief
Creating and Stabilizing Quantum Resource Phases of Interacting Quantum Matter: The Equilibrium and Nonequilibrium Routes
Quantum technologies are expected to play a key role in Europe’s future competitiveness in computing, sensing, and secure communication. Their operation relies on fragile quantum resources—such as entanglement and coherent superposition—which are difficult to preserve in realistic many-particle systems. In interacting quantum systems, these resources typically degrade rapidly due to thermalization, posing a fundamental barrier to scalable and reliable quantum technologies. The CondmatQTech project addressed this challenge by investigating how collective quantum behaviour can be controlled and stabilized rather than destroyed by interactions. The project focused on interacting quantum many-body systems and explored both equilibrium and non-equilibrium routes to generating and protecting quantum resources. A particular emphasis was placed on periodically driven (Floquet) quantum systems, where time-dependent control can give rise to novel and robust dynamical phases. The overarching objective was to identify intrinsic physical mechanisms that suppress thermalization and enable long-lived quantum coherence without relying on active error-correction. By uncovering such mechanisms, the project contributes to the scientific foundations needed for next-generation quantum technologies and aligns with European strategic priorities in quantum science, digital technologies, and long-term technological sovereignty.
Data: CORDIS, © European Union
Project objective
We propose a program for creating and protecting quantum correlations and coherences responsible for the supremacy of quantum technologies, by identifying their optimal embodiment in many-body states of quantum matter in and out of equilibrium. Our vision is to connect various stable phases of quantum matter, especially the non-equilibrium ones, with perturbatively connected families of resourceful states, and thus tie the stability and creation of those phases with those of the resources. Our concrete formulation is based on physics insights of the symmetry, localization property, and dynamics of many-body systems under coherent external drive.For state creation, we will employ quantum annealing based protocols combined with our understanding of quantum phasetransitions between simple phases (e.g., ferromagnetic) and those with useful correlations like long-range entanglement (e.g., spin liquids). The approach promises to evade notorious classical barriers. For example, the “sign problems” in simulating highly frustrated ground states without disorder can be bypassed by our protocol. For protecting delicate quantum states, we propose a novel approach of combining dynamical stability owing to the suppression of many-body chaos by a periodic drive and Many-Body Localization. Our program will facilitate and expedite the advent of quantum technologies which are expected to revolutionize every aspect of human life and society. On the fundamental side, the project will uncover new territories in the field of quantum condensed matter, especially that stabilized out-of-equilibrium. This will initiate new research perspective to the field of theoretical many-body physics, and endow the nascent field of non-equilibrium coherent quantum matter with a direct technological (and hence economic) relevance.
Original text from CORDIS.
Participants
Links
- View on CORDIS
- DOI: 10.3030/101110987
- https://ec.europa.eu/research/participants/documents/downloadPublic?documentIds=080166e50bfe1074&appId=PPGMS
- https://ec.europa.eu/research/participants/documents/downloadPublic?documentIds=080166e522e15191&appId=PPGMS
Data: CORDIS, © European Union