QuoMoDys · Quantum Thermodynamics of Many-Body Driven Systems
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2022-06-01 → 2025-03-28
- EU contribution
- €196,708
- Participants
- 1
- Scheme
- MSCA-IF
Lines connect the coordinator with its partners.
Results in brief
Quantum Thermodynamics of Many-Body Driven Systems
The project has addressed the problem of probing and characterizing quantum entanglement in quantum many-body systems, especially in the presence of drive and dissipation. A special focus has been placed on the study of exciton-polariton systems, which represent a very relevant experimental platform to investigate such fundamental questions. In particular, we have : - developed new methods of fundamental interest to quantum information science to detect quantum entanglement in many-body systems - studied, in a joint theory-experiment collaboration, the prospects of exciton-polariton platforms to generated quantum-entangled photon pairs. Quantum entanglement in many-body systems represent a key physical property in the context of quantum technologies, especially for quantum computing and sensing. Many fundamental questions remain to be addressed before quantum computing hardwares can find a route towards technology applications. The QuoMoDys project contributes to asking and answering such fundamental questions. The main conclusions of the action are that: - on the quantum information theory level, certification of relevant properties of quantum many-body systems is possible, even in the absence of full-state tomography. This is a key asset for quantum technologies given that full-state tomography is unfeasible beyond about a dozen of qubits. - on the more specific platform of exciton-polaritons, the interplay of intrinsic quantum noise with the thermal noise of the solid-state lattice in which the system is embedded had been overlooked in previous works; our work lays the ground to future developments devoted to enhance the quantum contribution, given potentially rise to quantum entanglement among the photons leaving the system.
Data: CORDIS, © European Union
Project objective
The project aims as developing novel thermodynamic concepts to understand quantum many-body systems when they are driven out of thermal equilibrium via the coupling to external reservoirs. In particular, we will clarify the specific resources, for thermodynamic protocols, contained in many-body quantum superpositions, which could be stabilized in these systems via the interplay of intrinsic dynamics, external driving and dissipation. Our special focus will be on exciton-polaritons systems, which realize ""quantum fluids of light"" due to the strong coupling of light to electronic excitations confined in semi-conducting micro-cavity. Considering lattices of coupled such microcavities -- realizing the analog of electronic band structures, with hybrid light-matter quasi-particles playing the role of electrons in ordinary metals and insulators -- we shall develop a novel theoretical approach to capture quantum-correlation effects in these quantum fluids. As a specific situation of fundamental interest, which can be realized in the aforementioned exciton-polariton lattices, we will investigate a quantum phase transition where dissipation plays a key role, stabilizing novel states of quantum matter with analogs neither in classical systems out of equilibrium, nor in quantum systems at thermal equilibrium. On the conceptual side, we will extend existing notions of quantum thermodynamics to a many-body realm. On the technical side, we shall develop a new semi-classical theory to describe quantum entanglement in these driven-dissipative quantum systems. This fundamental research, done in collaboration with theoreticians at the forefront of research in quantum thermodynamics, and world-class experimental groups for polaritonics, will open new perspectives for the application of driven-dissipative quantum many-body systems in quantum technologies.""
Original text from CORDIS.
Participants
- CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS · ParisCoordinatorFrance
Links
Data: CORDIS, © European Union