Abstract

We evaluate the advantages of performing cross-phase modulation (XPM) on a very-far-off-resonance atomic system. We consider a ladder system with a weak (few-photon level) control coherent field imparting a conditional nonlinear phase shift on a probe beam. We find that by coupling to an optical resonator, the optimal XPM is enhanced proportional to the finesse of the resonator by a factor of $F/4\pi$. We present a semiclassical description of the system and show that the phenomenon is optimal in the self-defined condition of off-resonance effective cooperativity equal to one.

© 2016 Optical Society of America

Two-channel cross-phase modulation in a multi-atom cavity quantum electrodynamics system

Guoqing Yang, Zheng Tan, and Yifu Zhu
J. Opt. Soc. Am. B 31(3) 619-625 (2014)

Electromagnetically induced cross focusing in a four-level atomic medium

E. M. Becerra-Castro and Luís E. E. de Araujo
J. Opt. Soc. Am. B 33(8) 1574-1579 (2016)

Enhanced cross-Kerr nonlinearity via electromagnetically induced transparency in a four-level tripod atomic system

Xudong Yang, Shujing Li, Chunhong Zhang, and Hai Wang
J. Opt. Soc. Am. B 26(7) 1423-1434 (2009)

Fifth-order nonlinearity and 3-qubit phase gate in a five-level tripod atomic system

Pengbo Li, Ying Gu, Lijun Wang, and Qihuang Gong
J. Opt. Soc. Am. B 25(4) 504-512 (2008)

EIT-assisted large cross-Kerr nonlinearity in a four-level inverted-Y atomic system

J. Kou, R. G. Wan, Z. H. Kang, H. H. Wang, L. Jiang, X. J. Zhang, Y. Jiang, and J. Y. Gao
J. Opt. Soc. Am. B 27(10) 2035-2039 (2010)