Work

Three-qubit entanglement in the Bethe-Heitler process

Year: 2026

Type: preprint

Abstract: The familiar Bethe-Heitler process on the proton target $e+p\to e+p+γ$ is transformed into a laboratory for studying multiparticle entanglement. We discuss how bipartite and genuine tripartite entanglement between the final state electron, proton and photon are built up by successive $1\to 2$ and $2\to 2$ elementary interactions. We validate our argument by simulating events. Below 5 GeV center-of-mass energy, we identify more than 900 Greenberger-Horne-Zeilinger (GHZ) states and 1200 W states, each with a fidelty exceeding 99%.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2608.18030

Authors: Cao, Haotian, Guo, Yuxun, Hatta, Yoshitaka, Schoenleber, Jakob

Institutions: Northwestern University, Stony Brook University, Brookhaven National Laboratory, RIKEN BNL Research Center, Technical University of Munich

Language: English

Topic: Quantum Mechanics and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Northwestern University, Deutsche Forschungsgemeinschaft, Quest High Performance Computing, High Energy Physics, Laboratory Directed Research and Development

Awards: G241279073, G4354484304, EXC 2094: ORIGINS: Vom Ursprung des Universums bis zu den ersten Bausteinen des Lebens, G4920325777, G5765906131, G6947350888

OpenAlex ID: W7203754115

Cites: 10

Cited by:

Related to: 10