We propose two schemes to one-step generate the three-particle Greenberger–Horne–Zeilinger state based on the resonant atom–cavity fields interaction. The whole process may be realized experimentally providing that simple apparatus, initial conditions, and some manipulation in principle are achieved. Finally, in the current or the near future experiment parameter, we show that the proposed schemes can maintain the state with high fidelity under the condition of atomic spontaneous emission and decay of cavity fields.
© 2012 Optical Society of America
Original Manuscript: November 22, 2011
Revised Manuscript: February 16, 2012
Manuscript Accepted: February 26, 2012
Published: June 22, 2012
Zi-hong Chen, Pei Pei, Feng-yang Zhang, and He-shan Song, "One-step preparation of three-particle Greenberger–Horne–Zeilinger states in cavity quantum electrodynamics," J. Opt. Soc. Am. B 29, 1744-1749 (2012)