论文标题
指南针状态：挤压和位移对Fock空间的影响
Compass state: Effect of squeezing and displacement on the Fock space
论文作者
论文摘要
我们研究了一类广泛的非古典状态，这些状态由超叠挤压和流离失所的数量状态组成。分析了相空间结构，牢记海森堡有限的参数估计敏感性。确定了适当的挤压和位移参数，其中与对量度敏感的指南针状态相比，状态保真度超过99 $ \％$。同样，在拟议和指南针状态下，发现小移位测量的差异相等。它们显示出类似的行为，平均光子数的变化。在计量应用中，指南针状态的数量方差较小，对于低相干幅度，它表明其估计阻尼参数的潜力。
We investigate a broad class of non-classical states, composed of superposed squeezed and displaced number states. The phase space structure is analysed, keeping in mind, Heisenberg limited sensitivity in parameter estimation. Appropriate squeezing and displacement parameters are identified, wherein state fidelity in comparison to metrologically sensitive compass state, is more than 99$\%$. Also, the variance in small shifts measurements, is found equal for both proposed and compass states. They show similar behaviour with change in average photon number. In metrological application, number variance of the compass state being small for low coherent amplitude, suggests its potential to estimate damping parameter.
