Quantum 2025 – scientific programme
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MON: Monday Contributed Sessions
MON 23: Poster Session: Fundamental Aspects and Model Systems
MON 23.14: Poster
Monday, September 8, 2025, 18:30–20:30, ZHG Foyer 1. OG
Efficient detection of genuine multipartite entanglement using moments of positive maps — •Saheli Mukherjee1, Bivas Mallick1, Sahil Gopalkrishna Naik1, Ananda G. Maity1,2, and Archan S. Majumdar1 — 1S.N. Bose National Centre for Basic Sciences, Kolkata-700106, West Bengal, India — 2Networked Quantum Devices Unit, Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa 904-0495, Japan
Genuine multipartite entanglement (GME) represents the strongest form of entanglement in multipartite systems, providing significant advantages in various quantum information processing tasks. In this work, we propose an efficient and experimentally feasible scheme for detecting GME, based on the truncated moments of positive maps. Our method avoids the need for full state tomography, making it scalable for larger systems. We provide illustrative examples of both pure and mixed states to demonstrate the efficacy of our formalism in detecting inequivalent classes of tripartite genuine entanglement. Finally, we present a proposal for realising these moments in real experiments.
Keywords: Genuine multipartite entanglement; Positive maps; Moments of positive maps