quantum-computing

[qmeets talk] Multipartite Quantum Resources and Where to Find Them

Quantiki

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⚡ Quantum Brief

Leading quantum physicists Otfried Gühne and Nicolai Friis will present a May 6, 2026 online seminar exploring multipartite quantum entanglement’s role in quantum technologies like communication, computation, and metrology. The talk introduces diverse forms of multi-party entanglement, emphasizing its ubiquity in many-body systems while highlighting persistent theoretical and experimental challenges in characterizing its structure. A key focus is "superactivation"—where multiple copies of a non-resource quantum state become useful, unlike single copies—illustrating how collective quantum effects unlock hidden potential in seemingly inert systems. Recent advances in detecting genuine multipartite entanglement (GME) will be reviewed, alongside ongoing obstacles in practical implementations, bridging theory with real-world quantum device limitations. The 20-minute talks plus discussion aim to foster collaboration, targeting researchers in quantum resource theory and experimental quantum information science.

[qmeets talk] Multipartite Quantum Resources and Where to Find Them

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[qmeets talk] Multipartite Quantum Resources and Where to Find Them Dates: Wednesday, May 6, 2026Web page: qmeetsRegistration deadline: Wednesday, May 6, 2026Tags: #quantum computing #quantum information #quantum resource theoryAbstract: Quantum correlations between multiple parties are a central ingredient for many quantum technologies, with applications in quantum communication, quantum computation, and quantum metrology, amongst others. However, while multipartite entanglement is a generic feature of many-body systems, unraveling the entanglement structure of a given quantum system is generally difficult, both in theory and in practice. In this talk, we will first give an introduction to the different forms of entanglement between several parties. Then we discuss the phenomenon of superactivation: Two or more copies of a quantum state can be resources, where a single copy is not. Focusing on genuine multipartite entanglement (GME) as a resource, we give an overview of recent theoretical and experimental advances in studying the corresponding superactivation phenomenon, and the related challenges for the detection of GME in practical setups. Speakers: Otfried Gühne and Nicolai Friis [Online seminar] Format: Each talk will be 20 + 10 minutes, followed by 15 minutes of general discussion. Do you have speaker suggestions? Interested in a joint seminar? Let us know! Log in or register to post comments

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