Critical properties of entanglement in the Dicke model with the dipole–dipole interactions

✍ Scribed by J. Nie; X.L. Huang; X.X. Yi

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 329 KB
• Volume: 282
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2008.12.040

✦ Synopsis

In this paper, we investigate two aspects of entanglement properties of the ground state for the Dicke model with the dipole-dipole interaction between the atoms in the thermodynamic limit, and observe how they are affected by the quantum phase transition. The appearance of dipole-dipole interactions between the atoms does not change the maximum atom-field entanglement at the critical point, while it changes the maximum atom-atom entanglement at the critical point, and has an important influence on the atom-atom entanglement behavior.