References & Citations
Quantum Physics
Title: Self-testing of genuine multipartite non-local and non-maximally entangled states
(Submitted on 26 Feb 2024 (v1), last revised 11 May 2024 (this version, v3))
Abstract: Self-testing enables the characterization of quantum systems with minimal assumptions on their internal working as such it represents the strongest form of certification for quantum systems. In the existing self-testing literature, self-testing states that are not maximally entangled, but exhibit genuine multipartite nonlocality, have remained an open problem. This is particularly important because, for many-body systems, genuine multipartite nonlocality has been recognized as the strongest form of multipartite quantum correlation. In this work, we present a Cabello-like paradox for scenarios involving an arbitrary number of parties. This paradox is a tool for detecting genuine multipartite nonlocality, allowing for the specific identification and self-testing of states that defy the paradox's limits the most, which turn out to be non-maximally multipartite entangled states. While recent results [\textit{\v{S}upi\'c et al., Nature Physics, 2023}] suggest network self-testing as a means to self-test all quantum states, here we operate within the standard self-testing framework to self-test genuine multipartite non-local and non-maximally entangled states.
Submission history
From: Ranendu Adhikary [view email][v1] Mon, 26 Feb 2024 07:40:36 GMT (534kb,D)
[v2] Mon, 4 Mar 2024 17:56:38 GMT (529kb,D)
[v3] Sat, 11 May 2024 06:21:03 GMT (600kb,D)
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