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Maximally entangled Rydberg-atom pairs via Landau-Zener sweeps

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


Dhiya Varghese

Sebastian Wüster

Associate Professor

Rejish Nath


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.


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.

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
Peer Reviewed Peer Reviewed
Volume 107
Issue 4
Article Number 043311
Keywords Entanglement in quantum gases; Light-matter interaction
Public URL
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