Maximally entangled Rydberg-atom pairs via Landau-Zener sweeps

Varghese, Dhiya; Wüster, Sebastian; Li, Weibin; Nath, Rejish

Abstract

We analyze the formation of maximally entangled Rydberg atom pairs subjected to Landau-Zener sweeps of the atom-light detuning. Though the populations reach a steady value at longer times, the phases evolve continuously, leading to periodic oscillations in the entanglement entropy. The local unitary equivalence between the obtained maximally entangled states and the Bell states is verified by computing the polynomial invariants. Finally, we study the effect of spontaneous emission from the Rydberg state of rubidium atoms on the correlation dynamics and show that the oscillatory dynamics persists for high-lying Rydberg states. Our study may offer ways to generate maximally entangled states, quantum gates, and exotic quantum matter in arrays of Rydberg atoms through Landau Zener sweeps.

Citation

Varghese, D., Wüster, S., Li, W., & Nath, R. (2023). Maximally entangled Rydberg-atom pairs via Landau-Zener sweeps. Physical Review A, 107(4), Article 043311. https://doi.org/10.1103/PhysRevA.107.043311

• Journal Article Type: Article
• Acceptance Date: Mar 30, 2023
• Online Publication Date: Apr 10, 2023
• Publication Date: 2023-04
• Deposit Date: Mar 30, 2023
• Publicly Available Date: May 4, 2023
• Journal: Physical Review A
• Print ISSN: 2469-9926
• Electronic ISSN: 2469-9934
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 107
• Issue: 4
• Article Number: 043311
• DOI: https://doi.org/10.1103/PhysRevA.107.043311
• Keywords: Entanglement in quantum gases; Light-matter interaction
• Public URL: https://nottingham-repository.worktribe.com/output/19005644
• Publisher URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.107.043311