Continuous-variable entanglement in a correlated spontaneous emission laser Academic Article uri icon

abstract

  • We discuss the generation and evolution of entangled light in a correlated spontaneous emission laser. The master equation for the two-mode field in a cavity is derived and solved analytically. The time-dependent characteristic function in the Wigner representation for the two-mode field is obtained. It shows that the two-mode field in the cavity evolves in a two-mode Gaussian state. The entanglement degree of the two-mode field in the cavity increases initially, then decreases, and finally vanishes as the field evolves from an initial vacuum. The period of the entanglement is extended as the intensity of the driving field is increased. It is found that the entanglement still exists even when the two-mode squeezing disappears. During the entanglement period, the intensity of the field is amplified. The entanglement for the initial field being a two-mode squeezed vacuum and the entanglement of the output field are also discussed. © 2005 The American Physical Society.

published proceedings

  • Physical Review A

author list (cited authors)

  • Tan, H., Zhu, S., & Zubairy, M. S

citation count

  • 110

complete list of authors

  • Tan, Hua-Tang||Zhu, Shi-Yao||Zubairy, M Suhail

publication date

  • August 2005