Photon Excitations Excitated the Sqeezing Properties of the Excited Entangled Coherent States |
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| Authors: | Lan Xu Shi-Qing Tang Lin Yan |
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| Institution: | 1.Department of Mathematics and Science,Hunan First Normal University,Changsha,China;2.Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education,Hunan Normal University,Changsha,China;3.Department of Physics,Hunan Normal University,Changsha,China;4.College of Physics and Electronic Engineering,Hengyang Normal University,Hengyang,China |
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| Abstract: | In our previous paper, we have introduced a new kind of continuous-variable-type entangled states, called double-mode excited entangled coherent states. In this paper, we study sum squeezing properties of such excited entangled coherent states. We focus on discussing the influence of photon excitations on sum squeezing properties. It is found that the photon excitations seriously affected sqeezing properties of the excited entangled coherent states. With increasing the number of the photon excitations m, the higher-order terms move away from its initial state |ψ 0〉 and the degrees of sum squeezing are increasing. In this sense, it implies that the photon excitations excitated the sum sqeezing properties of the double-mode excited entangled coherent states. |
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