TY - JOUR
T1 - Four-wave mixing and biphoton generation in a two-level system
AU - Du, Shengwang
AU - Wen, Jianming
AU - Rubin, Morton H.
AU - Yin, G. Y.
PY - 2007
Y1 - 2007
N2 - We find that in a two-level system there are two kinds of four-wave mixing processes which destructively contribute to the third-order nonlinear susceptibility. In a paired-photon generation scheme by using a single retroreflected pump beam, these two processes occur with definite time orders. The biphoton temporal correlation, which is measured with a back-to-back geometry in a laser-cooled two-level atomic ensemble, shows a damped Rabi oscillation and photon antibunching. Without suppressing the background of Rayleigh scattering, the upper limit of Cauchy criteria is estimated.
AB - We find that in a two-level system there are two kinds of four-wave mixing processes which destructively contribute to the third-order nonlinear susceptibility. In a paired-photon generation scheme by using a single retroreflected pump beam, these two processes occur with definite time orders. The biphoton temporal correlation, which is measured with a back-to-back geometry in a laser-cooled two-level atomic ensemble, shows a damped Rabi oscillation and photon antibunching. Without suppressing the background of Rayleigh scattering, the upper limit of Cauchy criteria is estimated.
UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000244646100029
UR - https://openalex.org/W2039892122
UR - https://www.scopus.com/pages/publications/33846582949
U2 - 10.1103/PhysRevLett.98.053601
DO - 10.1103/PhysRevLett.98.053601
M3 - Journal Article
SN - 0031-9007
VL - 98
JO - Physical Review Letters
JF - Physical Review Letters
IS - 5
M1 - 053601
ER -