Project description
New field theory for the many-body physics of waveguide quantum electrodynamics
Waveguide quantum electrodynamics (wQEDs) is concerned with the interaction of photons propagating in a 1D waveguide with localised atom-like quantum emitters. This quantum optics paradigm is a promising one for analogue quantum simulation. However, due to the inherent non-linearities of a photonic bath, a coherent theoretical framework to describe non-linear many-body wQED systems is lacking. With the support of the Marie Skłodowska-Curie Actions programme, the QOMBE project aims to develop a field theory for wQED using one of the most powerful tools of quantum field theory used to deal with interacting fields: the path integral approach. This new theory will enable the team to probe the many-body physics of the photonic environment.
Objective
Quantum simulation is a fundamental concept in our pre-fault tolerant era. In this respect, waveguide quantum electrodynamics (wQED) setups, i.e. quantum emitters (atoms) interfaced with engineered photonic materials, represent promising NISQ devices for analog quantum simulation. Many experimental platforms to engineer photonic environments, e.g. arrays of superconducting circuits, possess intrinsic photonic nonlinearities in the form of photon-photon interactions caused by, e.g. the anharmonicity of the superconducting circuits. Though available for specific cases, a coherent theoretical framework to describe nonlinear many-body wQED systems is still missing. The nonlinear character of a photonic bath renders the whole system complex and not exactly solvable, making standard quantum optics textbook approaches not applicable. This project will introduce a radically new approach to this field by transferring knowledge from quantum field theory (QFT) to wQED, an approach that has already proven useful in condensed matter and in ultracold atoms physics. We will study nonlinear wQED systems, i.e. with photon-photon interactions, modelled by, e.g. a Bose-Hubbard Hamiltonian, and investigate purely photonic many-body physics effects like quantum phase transitions. This will be carried out by developing a field theory for wQED using a path integral approach, of the most powerful tools in QFT to deal with interacting fields. The central goal will be derivation of an effective emitters’ action, which can probe the many-body physics of the photonic environment. In particular, we will be able to characterize the behavior of an atomic quantum simulator across a quantum phase transition of the surrounding photonic environment. Characterizing the effects of nonlinearities represents a breakthrough in the physics of wQED, and will shed light on how to harness these experimentally unavoidable features for optical quantum computing tasks.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project has not yet been classified with EuroSciVoc.
Be the first one to suggest relevant scientific fields and help us improve our classification service
You need to log in or register to use this function
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
-
HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
MAIN PROGRAMME
See all projects funded under this programme
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
See all projects funded under this funding scheme
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2024-PF-01
See all projects funded under this callCoordinator
Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
80333 Muenchen
Germany
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.