Work

Entanglement-efficiency trade-offs in the fusion-based generation of photonic Greenberger-Horne-Zeilinger-like states

Year: 2025

Type: article

Abstract: Probabilistic entangling measurements are key operations in linear-optical quantum technologies, enabling the generation and manipulation of high-dimensional quantum states. While prior research has focused predominantly on specific entangled states, notably graph states and Greenberger-Horne-Zeilinger (GHZ) states, broader classes of states with variable entanglement remain underexplored. In this work, we present a linear-optical approach for generating and fusing GHZ-like states, which generalize standard GHZ states to include variable entanglement degrees. We introduce two schemes based on modified fusion gates that allow flexible control over generation efficiency and the entanglement of the output states. These results offer a promising pathway toward resource-efficient entangled-state generation for scalable quantum computing and communication.

Source: Physical Review Research

DOI: 10.1103/t375-mck9

Authors: A. A. Melkozerov, M. Yu. Saygin, S. S Straupe

Institutions: Lomonosov Moscow State University, Russian Quantum Center

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funder: Foundation for the Advancement of Theoretical Physics and Mathematics