| Issue |
EPL
Volume 154, Number 6, June 2026
|
|
|---|---|---|
| Article Number | 68001 | |
| Number of page(s) | 7 | |
| Section | Quantum information | |
| DOI | https://doi.org/10.1209/0295-5075/ae6f48 | |
| Published online | 08 June 2026 | |
Genuine multipartite entanglement detection with mutually unbiased bases
Purandarpur High School - Purandarpur, West Bengal, 731129, India and Institute of Physics - Bhubaneswar, Odisha, 751005, India
Received: 14 December 2025
Accepted: 18 May 2026
Abstract
In the present paper, a novel framework to detect genuine multipartite entanglement (GME) has been presented by computing correlations in mutually unbiased bases (MUBs). It has been shown that correlation obtained by measuring in MUBs of all biseparable multipartite states satisfy a bound, whereas GME states violate it. Thus, the presented framework turns out to be a sufficient criterion to detect entanglement in a many-body scenario. The methodology paves a suitable way to demonstrate certification of different classes of tripartite and quadripartite GME states. In addition to its operational universality, correlation obtained by measuring in MUBs is shown to be juxtaposed with some well-known genuine tripartite and quadripartite entanglement measures.
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