Higher order squeezing as a measure of nonclassicality

作者：Ahmad Muhammad Ashfaq^*; Azam Sehrish; Aslam Samia; Bukhari Syed Hamad; Jamil Ayesha; Mustafa Faiza; Khan Salman Naeem

来源：Optik, 2016, 127(5): 2992-2995.

DOI：10.1016/j.ijleo.2015.11.228

• Superposition of coherent states
• Higher order squeezing
• Relative phase

Here, we have used a simplified criteria to study the possibilities of observing higher order squeezing for the superposition of two coherent states out of phase by pi,pi/2 and 3 pi/2. Remarkably, it is observed that the considered states exhibit higher order squeezing which reflects their nonclassical nature. It has been observed that the existence of higher order squeezing is dependent on the particular values of relative phase. Moreover, the squeezing effect gets stronger when relative phase of superposition is equal to the average photon number.

• 出版日期2016