Entanglement control of two-level atoms in dissipative cavities

Reyad Salah*, Ahmed M. Farouk, Ahmed Farouk, Mahmoud Abdel-Aty, Hichem Eleuch, Abdel Shafy F. Obada

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

An open quantum bipartite system consisting of two independent two-level atoms interacting nonlinearly with a two-mode electromagnetic cavity field is investigated by proposing a suitable non-Hermitian generalization of the Hamiltonian. The mathematical procedure of obtaining the corresponding wave function of the system is clearly given. Pancharatnam phase is studied to give a precise information about the required initial system state, which is related to artificial phase jumps, to control the degree of entanglement (DEM) and get the highest concurrence. We discuss the effect of time-variation coupling, and dissipation of both atoms and cavity. The effect of the time-variation function appears as frequency modulation (FM) effect in the radio waves. Concurrence rapidly reaches the disentangled state (death of entanglement) by increasing the effect of field decay. On the contrary, the atomic decay has no effect.

Original languageEnglish
Article number1510
JournalApplied Sciences (Switzerland)
Volume10
Issue number4
DOIs
Publication statusPublished - 1 Feb 2020
Externally publishedYes

Keywords

  • Concurrence
  • Control
  • Entanglement
  • Pancharatnam phase
  • Two-two level atoms

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