Higher-order squeezing of quantum field and higher-order uncertainty relations in non-degenerate four-wave mixing

• 来源期刊: 中国物理（英文版）
• 关键词: higher-order squeezing higher-order uncertainty relations quantum fields non-degenerate four-wave mixing
• 年，卷（期）: 2005,（9）
• 页码范围: 1828-1833
• 页数: 6页
• 语种: 英文

摘要

It is found that the field of the combined mode of the probe wave and the phase conjugate wave in the process of non-degenerate four-wave mixing exhibits higher-order squeezing to all even orders. The higher-order squeezed parameter and squeezed limit due to the modulation frequency are investigated. The smaller the modulation frequency is, the stronger the degree of higher-order squeezing becomes. Furthermore, the higher-order uncertainty relations in the process of non-degenerate four-wave mixing are presented for the first time. The product of higher-order noise moments is related to even order number N and the length L of the medium.