We discuss the creation of quantum discord between two two-level atoms trapped in an optical cavity in a noisy environment. It is shown that nonzero steady-state quantum discord between atoms can be obtained when the white-noise field is separately imposed on atoms or cavity mode, while the steady-state quantum discord reaches zero if both cavity mode and atoms are driven simultaneously by white-noise fields. In particular, we demonstrate that white-noise field in different cases can play a variously constructive role in the generation of quantum discord.
© 2010 Optical Society of America
Original Manuscript: May 28, 2010
Revised Manuscript: July 15, 2010
Manuscript Accepted: July 15, 2010
Published: August 12, 2010
Jia-sen Jin, Chang-shui Yu, Pei Pei, and He-shan Song, "Quantum discord induced by white noises," J. Opt. Soc. Am. B 27, 1799-1803 (2010)