Generation of a Cat State in an Optical Sideband.
Generation of a Cat State in an Optical Sideband.
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DOI：
10.1103/physrevlett.121.143602
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发表时间：
2018-04
影响因子：
8.6
通讯作者：
Takahiro Serikawa;J. Yoshikawa;S. Takeda;H. Yonezawa;T. Ralph;E. Huntington;A. Furusawa
中科院分区：
文献类型：
--
作者：
Takahiro Serikawa;J. Yoshikawa;S. Takeda;H. Yonezawa;T. Ralph;E. Huntington;A. Furusawa
我们提出了一种从连续光波的双边带模中减去一个光子的方法。其中心思想是使用相位调制作为预告光子减法方案中的频率边带分束器，其中边带模式的一小部分被下变频到0 Hz以提供触发光子。利用光学参量振荡器产生的500 MHz边带压缩态，应用该方法产生了光学猫态。从500 MHz边带模的直接零差测量重构的猫态的维格纳函数显示W（0，0）=-0.088 0. 001的负性，而没有任何损失校正。
We propose a method to subtract a photon from a double sideband mode of continuous-wave light. The central idea is to use phase modulation as a frequency sideband beam splitter in the heralding photon subtraction scheme, where a small portion of the sideband mode is down-converted to 0 Hz to provide a trigger photon. An optical cat state is created by applying the proposed method to a squeezed state at 500 MHz sideband, which is generated by an optical parametric oscillator. The Wigner function of the cat state reconstructed from a direct homodyne measurement of the 500 MHz sideband modes shows the negativity of W(0,0)=-0.088±0.001 without any loss corrections.