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From a quantum information point of view, preparation and control of the atomic optimal entropy squeezing state(AOEST) are researched for the system of a moving two-level atom entanglement with the field under the intensity-dependent coupling. Its results with those of atomic squeezing based on the Hesienbeg uncertainty relation is compared; sufficient and necessary conditions of preparation of the AOEST is analyzed and numerical verification of the AOEST is done. The influence of the field-mode structure parameter on the AOEST is examined. It is shown that information entropy squeezing is a remarkable precision measure for the atomic squeezing. The AOEST can be prepared by controlling the time of the atom interacting with the field, cutting the entanglement bewteen the atom and field, choosing coherence of the atom and modulating relative phase of the systems. A lasting AOEST can be obtained by controlling the field-mode structure parameter.
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Keywords:
- intensity-dependent coupling /
- field-mode structure parameter /
- atomic optimal entropy squeezing states
[1] ［1］Wu Y, Yang X 2006 Phys. Rev. D 73 067701
[2] ［2］Wang J X, Yang Z Y, An Y Y 2007 Acta Phys. Sin. 56 6420 (in Chinese)［王菊霞、杨志勇、安毓英 2007 56 6420］
[3] ［3］Liang H Q， Liu J M 2009 Acta Phys. Sin. 58 3692(in Chinese)［梁秋华、刘金明 2009 58 3692］
[4] ［4］Jun M M ，Zhi Y J， Ning L 2008 Int. J. Theor. Phys. 47 1270
[5] ［5］Wu Y 2000 Phys. Rev. A 61 033803
[6] ［6］Li C X， Fang M F 2003 Chin. Phys. 12 294
[7] ［7］Winneland D J， Bollinger J J 1994 Phys. Rev. A 50 67
[8] ［8］Muhammad A A， Ren M， Ma A Q， Liu S T 2008 Chin. Phys. B 17 1777
[9] ［9］Haine S A， Johnsson M T 2009 Phys. Rev. A 80 023611
[10] ］Wu Y， Yang X X 1997 Phys. Rev. Lett. 78 3086
[11] ］Liu X J， Zhou Y J， Fang M F 2009 Chin. Phys. B 18 2307
[12] ］Furnsawa A， Sorensen J， Braunstein S L， Fuchs C A， Kimble H J， Polzik E S 1998 Science 28 2706
[13] ］Fang M F， Zhou P， Swain S 2000 Chin. Phys. Lett. 17 885
[14] ］Bialynieki B I， Mycielski J 1975 Commun. Math. Phys. 44 129
[15] ］Liu X J， Zhou B J， Fang M F， Zhou Q P 2006 Acta Phys. Sin. 55 704(in Chinese)［刘小娟、周并举、方卯发、周清平 2006 55 704］
[16] ］Liu X J, Fang M F 2004 Commun.Theor.Phys. 42 103
[17] ］Liu XJ， Zhou B J， Liu M W， Li S C 2007 Chin. Phys. 16 3685
[18] ］Buck B， Sukumar C V 1981 Phys. Lett. A 81 132
[19] ］Zhou P, Hu Z L, Peng J S 1992 J. Mod. Opt. 39 49
[20] ］Fang M F 1995 Acta Phys. Sin. 44 296(in Chinese)［方卯发 1995 44 49］
[21] ］Huang Y X， Guo G C 1999 Acta Phys. Sin. 48 296(in Chinese)［黄燕霞、郭光籼 1999 48 49］
[22] ］Liu X J， Fang M F 2003 Chin. Phys. 12 0971
[23] ］Li C Z， Huang M， Chen P X， Liang L M Quantum Communication and Quantum Computation (Publishing House of National University of Defense Technology Press) (in Chinese) ［李承祖、黄明球、陈平形、梁林梅编者 量子通信和量子计算(国防科技大学出版社)］
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[1] ［1］Wu Y, Yang X 2006 Phys. Rev. D 73 067701
[2] ［2］Wang J X, Yang Z Y, An Y Y 2007 Acta Phys. Sin. 56 6420 (in Chinese)［王菊霞、杨志勇、安毓英 2007 56 6420］
[3] ［3］Liang H Q， Liu J M 2009 Acta Phys. Sin. 58 3692(in Chinese)［梁秋华、刘金明 2009 58 3692］
[4] ［4］Jun M M ，Zhi Y J， Ning L 2008 Int. J. Theor. Phys. 47 1270
[5] ［5］Wu Y 2000 Phys. Rev. A 61 033803
[6] ［6］Li C X， Fang M F 2003 Chin. Phys. 12 294
[7] ［7］Winneland D J， Bollinger J J 1994 Phys. Rev. A 50 67
[8] ［8］Muhammad A A， Ren M， Ma A Q， Liu S T 2008 Chin. Phys. B 17 1777
[9] ［9］Haine S A， Johnsson M T 2009 Phys. Rev. A 80 023611
[10] ］Wu Y， Yang X X 1997 Phys. Rev. Lett. 78 3086
[11] ］Liu X J， Zhou Y J， Fang M F 2009 Chin. Phys. B 18 2307
[12] ］Furnsawa A， Sorensen J， Braunstein S L， Fuchs C A， Kimble H J， Polzik E S 1998 Science 28 2706
[13] ］Fang M F， Zhou P， Swain S 2000 Chin. Phys. Lett. 17 885
[14] ］Bialynieki B I， Mycielski J 1975 Commun. Math. Phys. 44 129
[15] ］Liu X J， Zhou B J， Fang M F， Zhou Q P 2006 Acta Phys. Sin. 55 704(in Chinese)［刘小娟、周并举、方卯发、周清平 2006 55 704］
[16] ］Liu X J, Fang M F 2004 Commun.Theor.Phys. 42 103
[17] ］Liu XJ， Zhou B J， Liu M W， Li S C 2007 Chin. Phys. 16 3685
[18] ］Buck B， Sukumar C V 1981 Phys. Lett. A 81 132
[19] ］Zhou P, Hu Z L, Peng J S 1992 J. Mod. Opt. 39 49
[20] ］Fang M F 1995 Acta Phys. Sin. 44 296(in Chinese)［方卯发 1995 44 49］
[21] ］Huang Y X， Guo G C 1999 Acta Phys. Sin. 48 296(in Chinese)［黄燕霞、郭光籼 1999 48 49］
[22] ］Liu X J， Fang M F 2003 Chin. Phys. 12 0971
[23] ］Li C Z， Huang M， Chen P X， Liang L M Quantum Communication and Quantum Computation (Publishing House of National University of Defense Technology Press) (in Chinese) ［李承祖、黄明球、陈平形、梁林梅编者 量子通信和量子计算(国防科技大学出版社)］
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