CLASSICAL AREAS OF PHENOMENOLOGY |
Prev
Next
|
|
|
Role of phase fluctuation and dephasing in the enhancing continuous variable entanglement of a two-photon coherent beat laser |
Sintayehu Tesfa† |
Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, Germany; Physics Department, Dilla University, P. O. Box 419, Dilla, Ethiopia |
|
|
Abstract A steady state analysis of the nonclassical features and statistical properties of the cavity radiation of a two-photon coherent beat laser is presented. Results show that the degree of two-mode squeezing, detectable entanglement and intensity of the cavity radiation can increase with the deviation of the phase fluctuations of the laser employed in preparing the atoms, but decrease with the increasing rate at which the induced coherence superposition decays. Although it is found that varying the phase fluctuations and dephasing can lead to modification in the quantum features and statistical properties of the radiation, it does not alter the similarity in the nature of the degree of entanglement detectable by the criteria following from Duan-Giedke-Cirac-Zoller and logarithmic negativity in a perceivable manner. Since the intensity and quantum features can be readily enhanced, this system is expected to be a viable source of a strong robust entangled (squeezed) light under various conditions. Moreover, comparison of the mean number of photon pairs with intensity difference shows that the chance of inciting a two-photon process can be enhanced by changing the rate of dephasing and phase fluctuations.
|
Received: 23 April 2011
Revised: 29 August 2011
Accepted manuscript online:
|
PACS:
|
42.50.Ar
|
|
|
42.50.Gy
|
(Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)
|
|
42.50.Lc
|
(Quantum fluctuations, quantum noise, and quantum jumps)
|
|
03.65.Ud
|
(Entanglement and quantum nonlocality)
|
|
Cite this article:
Sintayehu Tesfa Role of phase fluctuation and dephasing in the enhancing continuous variable entanglement of a two-photon coherent beat laser 2012 Chin. Phys. B 21 014204
|
[1] |
Tesfa S 2008 itJ. Phys. B: At. Mol. Opt. Phys. 41 145501
|
[2] |
Ansari N A, Banacloche J G and Zubairy M S 1990 itPhys. Rev. A 41 5179
|
[3] |
Ansari N A 1992 itPhys. Rev. A 46 1560
|
[4] |
Tan H T, Zhu S Y and Zubairy M S 2005 Phys. Rev. A 72 022305
|
[5] |
Xiong H, Scully M O and Zubairy M S 2005 Phys. Rev. Lett. 94 023601
|
[6] |
Kiffner M, Zubairy M S, Evers J and Keitel C H 2007 Phys. Rev. A 75 033816
|
[7] |
Tesfa 2006 Phys. Rev. A 74 043816
|
[8] |
Scully M O, Wodkiewicz K, Zubairy M S, ergou J, Lu N and Meyer ter Van J 1988 Phys. Rev. lett. 60 1832
|
[9] |
Anwar J and Zubairy M S 1994 Phys. Rev. A 49 481
|
[10] |
An S and Sargent III M 1989 Phys. Rev. A 39 1841
|
[11] |
Ansari N A 1993 Phys. Rev. A 48 4686
|
[12] |
Tesfa S 2010 Phys. Rev. A 82 053835
|
[13] |
Tesfa S 2011 Phys. Rev. A 83 023809
|
[14] |
Tesfa S 2011 itarXiv: 1101.3234v1 [quant-ph]
|
[15] |
Qamar S, Al-Amri M and Zubairy M S 2009 Phys. Rev. A 79 013831
|
[16] |
Qamar S, Qamar S and Zubairy M S 2010 Opt. Commun. 283 781
|
[17] |
Majeed M and Zubairy M S 1991 Phys. Rev. A 44 4688
|
[18] |
Qamar S, Ghafoor F, Hillery M and Zubairy M S 2008 Phys. Rev. A 77 062308
|
[19] |
Qamar S, Xiong H and Zubairy M S 2007 itPhys. Rev. A 75 062305
|
[20] |
Tesfa S 2009 itPhys. Rev. A 79 033810
|
[21] |
Tesfa S 2009 itPhys. Rev. A 79 063815
|
[22] |
Tesfa S 2009 itJ. Phys. B: At. Mol. Opt. Phys. 42 215506
|
[23] |
Barnett S M and Badmore P M 1997 itMethods in Theoretical Quantum Optics (Oxford University Press, New York)
|
[24] |
Malcuit M S, Gauthier D J and Boyd R W 1985 itPhys. Rev. Lett. 55 1086
|
[25] |
Steiner I and Toschek P E 1995 itPhys. Rev. Lett. 74 4639
|
[26] |
Winters M P, Hall J L and Toschek P E 1990 itPhys. Rev. Lett. 65 3116
|
[27] |
Kolchin P, Du S, Belthangady C, Yin G Y and Harris S E 2006 itPhys. Rev. Lett. 97 113602
|
[28] |
McCormick C F, Marino A M, Boyer V and Lett P D 2008 itPhys. Rev. A 78 043816
|
[29] |
Wu H and Xiao M 2009 itPhys. Rev. A 80 063415
|
[30] |
Shi W X, Hu X M and Wang F 2009 itJ. Phys. B: At. Mol. Opt. Phys. 42 165506
|
[31] |
Tesfa S 2008 itJ. Phys. B: At. Mol. Opt. Phys. 41 055503
|
[32] |
Einstein A, Podolsky B and Rosen N 1935 itPhys. Rev. 47 777
|
[33] |
Tesfa S 2008 itPhys. Rev. A 77 013815
|
[34] |
Duan L M, Giedke G, Cirac J I and Zoller P 2000 itPhys. Rev. Lett. 84 2722
|
[35] |
Horodecki M, Horodcki P and Horodecki R 1996 itPhys. Lett. A 223 1
|
[36] |
Simon R 2000 itPhys. Rev. Lett. 84 2726
|
[37] |
Giovannetti V, Mancini S, Vitali D and Tombesi P 2003 itPhys. Rev. A 67 022320
|
[38] |
Shchukin E and Vogel W 2005 itPhys. Rev. Lett. 95 230502
|
[39] |
Serafini A 2006 itPhys. Rev. Lett. 96 110402
|
[40] |
Hillery M and Zubairy M S 2006 itPhys. Rev. Lett. 96 050503
|
[41] |
Nha H and Zubairy M S 2008 itPhys. Rev. Lett. 101 130402
|
[42] |
Vidal G and Wener R F 2002 itPhys. Rev. A 65 032314
|
[43] |
Laurat J, Keller G, Oliviera-Huguenim Augusto J, Fabre C, Coudreau T, Serafini A, Adesso G and Illuminati F 2005 itJ. Opt. B: Quantum Semiclass. Opt. 7 577
|
[44] |
Adesso G, Serafini A and Illuminati F 2004 itPhys. Rev. A 70 022318
|
[45] |
Fiurasek J and Cerf N J 2004 itPhys. Rev. Lett. 93 063601
|
[46] |
Ma Y H, Mu Q X, Yang G H and Zhou L 2008 itJ. Phys. B: At. Mol. Opt. Phys. 41 215502
|
[47] |
Fujikawa K 2009 itPhys. Rev. A 79 032334
|
[48] |
Mandel L 1979 itOpt. Lett. 4 205
|
[49] |
Mandel L and Wolf E 1995 itOptical Coherence and Quantum Optics (New York: Cambridge University Press)
|
[50] |
Agrwal G S and Tara K 1992 itPhys. Rev. A 46 485
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|