Higher order squeezing as a measure of nonclassicality

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• 作者：Muhammad Ashfaq Ahmad^a ; ^{maahmad@ciitlahore.edu.pk" class="auth_mail" title="E-mail the corresponding author} ; Sehrish Azam^a ; Samia Aslam^a ; Syed Hamad Bukhari^b ; Ayesha Jamil^a ; Faiza Mustafa^a ; Salman Naeem Khan^a
• 关键词：Superposition of coherent states ; Higher order squeezing ; Relative phase
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：127
• 期：5
• 页码：2992-2995
• 全文大小：545 K

文摘

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 π, π/2 and 3π/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.