Amplitude-squared squeezing of superposition of coherent states |
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| Authors: | Muhammad Ashfaq Ahma Ren Min Ma Ai-Qun and Liu Shu-Tian |
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| Institution: | [1]Department of Physics, Harbin Institute of Technology, Harbin 150001, China; [2]Department of Physics, COMSATS Institute of Information Technology, Lahore 54000, Pakistan; [3]Earthquake Engineering Research and Test Centre, Guangzhou University, Guangzhou 510405, China; [4]Physics Science and Technology School, Heilongjiang University, Harbin 150080, China; [5]City Construction College, Guangzhou University, Guangzhou 510900, China |
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| Abstract: | This paper discusses the amplitude-squared squeezing for the
superposition of two coherent states with their phase differences
being separately π/2, 3π/2, and π, as well as for the
superposition state of two pseudoclassical states. According to the
analysis, it is found that the superposition state of two coherent
states with their phase differences π/2 and 3π/2, and the
superposition state of two pseudoclassical states both do exhibit
the amplitude-squared squeezing. Also, some specific states are
found to exhibit even stronger squeezing effects when relative phase
of the superposition is equal to the average photon number.
Amplitude-squared squeezing is dependent on the difference in phase
between two coherent states. |
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| Keywords: | nonclassical states superposition of two coherent states amplitude-squared squeezing |
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