Objective
What tasks can be solved faster in large computer networks with the help of quantum computation and communication? This is the fundamental research question at the intersection of theoretical computer science and quantum information theory that I aim to understand in this project.
While the theory of quantum computing has a long and rich history, the theory of distributed quantum computing is still in its infancy. There are elementary distributed coordination tasks—for example, coloring of a cycle—that were well understood for classical algorithms already by the early 1990s, yet in 2025 we still have no idea if any of these tasks benefit from distributed quantum computing.
Very recently, my research group has made major advances in understanding the limits and capabilities of distributed quantum computing, in the context of the LOCAL model of distributed computing. We have shown that arguments based on causality and non-signaling distributions can be used to prove that a wide range of problems cannot admit distributed quantum advantage, while quantum games are a powerful tool for constructing local problems that do benefit from distributed quantum computing. Yet we have also discovered new barriers: known techniques cannot help us to tackle major open questions related to distributed symmetry breaking, local coordination, and optimization tasks. In this project, I aim to resolve these long-standing open questions. I aim to develop new frameworks and proof techniques that will let us resolve some of the biggest open questions of the field.
This project will shed light not only on the mathematical theory of distributed computing but also on the fundamental physical limits of large-scale information processing. While the work in this project is purely theoretical, I believe our new distributed algorithms will also serve as demonstrations and benchmarks that drive forward the development of practical quantum computers.
Fields of science (EuroSciVoc)
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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)
- distributed quantum computing
- distributed algorithms
- quantum advantage
- LOCAL model
- quantum-LOCAL model
- distributed graph algorithms
- locality
- lower bounds
- distributed symmetry breaking
- local coordination
- distributed optimization
- quantum non-locality
- non-signaling distributions
- finitely dependent distributions
- online-LOCAL model
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.
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HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
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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-ERC - HORIZON ERC Grants
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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) ERC-2025-ADG
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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.
02150 Espoo
Finland
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.