Please wait a minute...
Chin. Phys., 2005, Vol. 14(2): 336-342    DOI: 10.1088/1009-1963/14/2/020

Entropy squeezing of the field interacting with a nearly degenerate V-type three-level atom

Zhu Shi-Ninga, Zhou Qing-Chunb
a State Key Laboratory of Solid State Microstructure, Nanjing University, Nanjing 210093, China; b State Key Laboratory of Solid State Microstructure, Nanjing University, Nanjing 210093, China; Department of Mathematics and Physics, Jiangsu University of Science and Technology, Zhenjiang 212003, China
Abstract  The position- and momentum-entopic squeezing properties of the optical field in the system of a nearly degenerate three-level atom interacting with a single-mode field are investigated. Calculation results indicate that when the field is initially in the vacuum state, it may lead to squeezing of the position entropy or the momentum entropy of the field if the atom is prepared properly. The effects of initial atomic state and the splitting of the excited levels of the atom on field entropies are discussed in this case. When the initial field is in a coherent state, we find that position-entropy squeezing of the field is present even if the atom is prepared in the ground state. By comparing the variance squeezing and entropy squeezing of the field we confirm that entropy is more sensitive than variance in measuring quantum fluctuations.
Keywords:  field entropy      V-type three-level atom      squeezed state  
Received:  07 April 2004      Revised:  05 July 2004      Published:  02 March 2005
PACS:  42.50.Dv (Quantum state engineering and measurements)  
  42.50.Lc (Quantum fluctuations, quantum noise, and quantum jumps)  
  32.80.-t (Photoionization and excitation)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 90201008).

Cite this article: 

Zhou Qing-Chun, Zhu Shi-Ning Entropy squeezing of the field interacting with a nearly degenerate V-type three-level atom 2005 Chin. Phys. 14 336

[1] Entropy squeezing for a V-type three-level atom interacting with a single-mode field and passing through the amplitude damping channel with weak measurement
Cui-Yu Zhang(张翠玉) and Mao-Fa Fang(方卯发). Chin. Phys. B, 2021, 30(1): 010303.
[2] Evolution of quantum states via Weyl expansion in dissipative channel
Li-Yun Hu(胡利云), Zhi-Ming Rao(饶志明), Qing-Qiang Kuang(况庆强). Chin. Phys. B, 2019, 28(8): 084206.
[3] Entropy of field interacting with two two-qubit atoms
Tang-Kun Liu(刘堂昆), Yu Tao(陶宇), Chuan-Jia Shan(单传家), Ji-Bing Liu(刘继兵). Chin. Phys. B, 2018, 27(9): 090303.
[4] On the nonclassical dynamics of cavity-assisted four-channel nonlinear coupler
Rafael Julius, Abdel-Baset M A Ibrahim, Pankaj Kumar Choudhury, Hichem Eleuch. Chin. Phys. B, 2018, 27(11): 114206.
[5] Deformed photon-added entangled squeezed vacuum and one-photon states: Entanglement, polarization, and nonclassical properties
A Karimi, M K Tavassoly. Chin. Phys. B, 2016, 25(4): 040303.
[6] Low field induced giant anisotropic magnetocaloric effect in DyFeO3 single crystal
Ke Ya-Jiao, Zhang Xiang-Qun, Ge Heng, Ma Yue, Cheng Zhao-Hua. Chin. Phys. B, 2015, 24(3): 037501.
[7] New operator-ordering identities and associative integration formulas of two-variable Hermite polynomials for constructing non-Gaussian states
Fan Hong-Yi, Wang Zhen. Chin. Phys. B, 2014, 23(8): 080301.
[8] Photon number cumulant expansion and generating function for photon added- and subtracted-two-mode squeezed states
Lu Dao-Ming, Fan Hong-Yi. Chin. Phys. B, 2014, 23(2): 020302.
[9] Wave functions of a new kind of nonlinearsingle-mode squeezed state
Fan Hong-Yi, Da Cheng, Chen Jun-Hua. Chin. Phys. B, 2014, 23(12): 120302.
[10] Squeeze-swapping by Bell measurement studied in terms of the entangled state representation
Li Xue-Chao, Xie Chuan-Mei, Fan Hong-Yi. Chin. Phys. B, 2012, 21(8): 080304.
[11] On the role of the uncertainty principle in superconductivity and superfluidity
Roberto Onofrio. Chin. Phys. B, 2012, 21(7): 070306.
[12] Demonstrating additional law of relativistic velocities based on squeezed light
Yang Da-Bao, Li Yan, Zhang Fu-Lin, Chen Jing-Ling. Chin. Phys. B, 2012, 21(7): 074201.
[13] Generation of a new bipartite coherent-entangled state and its applications
Zhang Bao-Lai,Meng Xiang-Guo,Wang Ji-Suo. Chin. Phys. B, 2012, 21(3): 030304.
[14] Demonstration of the approximation of eliminating atomic excited populations in an atom–cavity system
Zhang Yu-Qing,Huang Gang,Tan Lei. Chin. Phys. B, 2012, 21(2): 023701.
[15] Generation of a squeezed state at 1.55 μ with periodically poled LiNbO3
Liu Qin, Feng Jin-Xia, Li Hong, Jiao Yue-Chun, Zhang Kuan-Shou. Chin. Phys. B, 2012, 21(10): 104204.
No Suggested Reading articles found!