E141-08 - Forschungsbereich Quantum Optics and Quantum Information
-
Journal:
Physical Review Letters
-
ISSN:
0031-9007
-
Date (published):
24-Apr-2026
-
Number of Pages:
6
-
Publisher:
AMER PHYSICAL SOC
-
Peer reviewed:
Yes
-
Keywords:
multipartite entanglement; activation of GME; trapped ions
en
Abstract:
A central concept in quantum information processing is genuine multipartite entanglement (GME), a type of correlation beyond biseparability, that is, correlations that cannot be explained by statistical mixtures of partially separable states. GME is relevant for characterizing and benchmarking complex quantum systems, and it is an important resource for applications such as quantum communication. Remarkably, it has been found that GME can be activated from multiple copies of biseparable quantum states, which do not possess GME individually. Here, we experimentally demonstrate unambiguous evidence of such GME activation from two copies of a biseparable three-qubit state in a trapped-ion quantum processor. These results not only challenge notions of quantum resources but also highlight the potential of using multiple copies of quantum states to achieve tasks beyond the capabilities of the individual copies.
en
Project title:
Verschränkungsbasierte Zertifizierung von Quantentechnologie: P 36478 (FWF - Österr. Wissenschaftsfonds) High-Performance integrated Quantum Computing: 897481 (FFG - Österr. Forschungsförderungs- gesellschaft mbH) MUlti State logic In cluster state Quantum computing: 914030 (FFG - Österr. Forschungsförderungs- gesellschaft mbH) Protecting Quantum Information through High-Dimensional Encoding: 921407 (FFG - Österr. Forschungsförderungs- gesellschaft mbH)
-
Project (external):
Austrian Research Promotion Agency (FFG) Horizon 2020
-
Project ID:
FO999914030 01017733
-
Research Areas:
Quantum Modeling and Simulation: 40% Quantum Many-body Systems Physics: 30% Design and Engineering of Quantum Systems: 30%