期刊
PHYSICAL REVIEW A
卷 106, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.106.043713
关键词
-
资金
- Deutsche Forschungsgemeinschaft [SFB 1432]
- Baden-Wuerttemberg Stiftung
- [425217212]
A multichannel quantum electro-optic sampling method is proposed for simultaneous measurements of different field quadratures and tuning interaction strengths. The probability distribution of the electro-optic signal outcomes is related to the indirectly measured MIR state. Consecutive measurements of (X) over cap and (Y) over cap quadratures can outperform eight-port homodyne detection.
We propose a multichannel version of quantum electro-optic sampling involving monochromatic field modes. It allows for multiple simultaneous measurements of arbitrarily many (X) over cap and (Y) over cap field quadratures for a single quantum-state copy, while independently tuning the interaction strengths at each channel. In contrast to standard electro-optic sampling, the sampled midinfrared (MIR) mode undergoes a nonlinear interaction with multiple near-infrared pump beams. We present a complete positive operator-valued measure description for quantum states in the MIR mode. The probability distribution of the electro-optic signal outcomes is shown to be related to an s-parametrized phase-space quasiprobability distribution of the indirectly measured MIR state, with the parameter s depending solely on the quantities characterizing the nonlinear interaction. Furthermore, we show that the quasiprobability distributions for the sampled and postmeasurement states are related to each other through a renormalization and a change in the parametrization. This result is then used to demonstrate that two consecutive measurements of both (X) over cap and (Y) over cap quadratures can outperform eight-port homodyne detection.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据