论文标题
通过两通道检测扩大挤压辅助干涉仪的高灵敏度范围
Broadening the high sensitivity range of squeezing-assisted interferometers by means of two-channel detection
论文作者
论文摘要
对于挤压增强的SU（2）干涉仪，我们从理论上研究了扩大子射击噪声灵敏度相位范围的可能性。我们表明，可以通过在两个输出端口中实现检测来实现该目标，并具有检测器输出的最佳组合，从而导致相位灵敏度独立于干涉仪操作点。只要每个检测器都有相敏化的放大器，则该灵敏度也可以容忍检测损失。
For a squeezing-enhanced SU(2) interferometer, we theoretically investigate the possibility to broaden the phase range of sub-shot-noise sensitivity. We show that this goal can be achieved by implementing detection in both output ports, with the optimal combination of the detectors outputs, leading to a phase sensitivity independent of the interferometer operation point. Provided that each detector is preceded by a phase-sensitive amplifier, this sensitivity could be also tolerant to the detection loss.
