Maximally entangled Rydberg-atom pairs via Landau-Zener sweeps

Autor:	Dhiya Varghese, Sebastian Wüster, Weibin Li, Rejish Nath
Rok vydání:	2023
Předmět:	Quantum Physics FOS: Physical sciences Quantum Physics (quant-ph)
Zdroj:	Physical Review A. 107
ISSN:	2469-9934 2469-9926
DOI:	10.1103/physreva.107.043311
Popis:	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 novel ways to generate maximally entangled states, quantum gates and exotic quantum matter in arrays of Rydberg atoms through Landau Zener sweeps. 7 pages, 7 figures and 1 table
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42cb11abe580e5d79d74dc8bbc4745d1 https://doi.org/10.1103/physreva.107.043311 Zobrazit plný text záznamu