Entangled photons produced by a three-level atom in free-space

✍ Scribed by Yong Hong Ma; Qing Xia Mu; Ling Zhou

• Book ID: 103873582
• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 154 KB
• Volume: 281
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2007.12.070

✦ Synopsis

A driven three-level atom system in free-space is investigated. The quantum entropy between the three-level atom and its spontaneous field is calculated. The entanglement between them and the influence of the classical field X on the entanglement are studied. The result indicates that there is a steady entanglement between the three-level atom and its spontaneous field, and they cannot be disentangled even the classical field is very large. In addition, the entanglement of the k photons and q photons is studied, it shows the two field is entangled for short time evolution.