运用量子信息熵理论,研究了玻色-爱因斯坦凝聚原子与Schr(o)dinger猫态光场作用系统中,原子信息熵压缩随时间的演化特性.结果表明;该体系中Schr(o)dinger猫态光场的两个相干态的相位角为φ=π/2时,原子信息熵的压缩将随着光场强度、原子间及原子与场间的耦合系数的变化而呈现交替压缩现象.
The time evolution property of the atomic information entropy squeezing in Bose-Einstein condensate atom interacting, with the Schrodinger cat-states are studied by means of quantum theory. The results indicate that when phase angle φ is at π/2 between the two coherent states in the Schrodinger cat state, atomic information entropy shows squeezing effects alternately with the variation of the intensity of optical field and coupling coefficients.
参考文献
[1] | Wall D F,Zoller P.Reduced quantum fluctuations in resonance fluorescence[J].Phys.Rev.Lett.,1981,47(10):709. |
[2] | Zhou P,Peng J S.Dipole squeezing in the two-photon Jaynes-Cummings model with superposition state preparation[J].Phys.Rev.,1991,A44:3331. |
[3] | Tian Yonghong,Peng Jinsheng.Atomic dipole squeezing and coherent population trapping in the system of twomode squeezed vacuum field interacting with a two-level atom[J].Acta Physica Sinica(物理学报),1999,48(11):2060-2069(in Chinese). |
[4] | Uffink J B,Hilgevoord J.Uncertainty principle and uncertainty relation[J].Found.Phys.,1985,15(9):925-944. |
[5] | Yang Ruifang,Sachuerfu.Entropy squeezing of the moving atom interacting with the two-mode squeezing vacuum field[J].Chinese Journal of Quantum Electronics(量子电子学报),2007,24(3):323-328(in Chinese). |
[6] | Ni Guangjiong,Chen Suqing.Advanced Quantum Mechanics(高等量子力学)[M].Shanghai:Fudan University Press,2000.372-375(in Chinese). |
[7] | Buzek V,Vidiella-Barranco A,Knight P L.Superposition of coherent states:squeezing and dissipation[J].Phys.Rev.A,1992,45(9):6570-6585. |
[8] | Li Chunxian,Fang Maofa.Entropy squeezing for a two-level atom in the Jaynes-Cummings model with an intensity-depend coupling[J].Chinese Physics,2003,12(3):294-299. |
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