PL EN


Preferences help
enabled [disable] Abstract
Number of results
Journal
2014 | 12 | 1 | 9-16
Article title

Coherence-controlled stationary entanglement between two atoms embedded in a bad cavity injected with squeezed vacuum

Content
Title variants
Languages of publication
EN
Abstracts
EN
We investigate the entanglement between two atoms in an overdamped cavity injected with squeezed vacuum when these two atoms are initially prepared in coherent states. It is shown that the stationary entanglement exhibits a strong dependence on the initial state of the two atoms when the spontaneous emission rate of each atom is equal to the collective spontaneous emission rate, corresponding to the case where the two atoms are close together. It is found that the stationary entanglement of two atoms increases with decreasing effective atomic cooperativity parameter. The squeezed vacuum can enhance the entanglement of two atoms when the atoms are initially in coherent states. Valuably, this provides us with a feasible way to manipulate and control the entanglement, by changing the relative phases and the amplitudes of the polarized atoms and by varying the effective atomic cooperativity parameter of the system, even though the cavity is a bad one. When the spontaneous emission rate of each atom is not equal to the collective spontaneous emission rate, the steady-state entanglement of two atoms always maintains the same value, as the amplitudes of the polarized atoms varies. Moreover, the larger the degree of two-photon correlation, the stronger the steady-state entanglement between the atoms.
Publisher

Journal
Year
Volume
12
Issue
1
Pages
9-16
Physical description
Dates
published
1 - 1 - 2014
online
2 - 2 - 2014
Contributors
  • College of Science, Hunan University of Technology, Zhuzhou, Hunan, 412007, China, liaoxp1@126.com
author
  • College of Science, Hunan University of Technology, Zhuzhou, Hunan, 412007, China
author
  • Department of Physics and Information Science, Hunan Normal University, Changsha, 410081, Hunan, China
References
  • [1] P.W. Shor, Phys. Rev. A 52, 2493 (1995) http://dx.doi.org/10.1103/PhysRevA.52.R2493[Crossref]
  • [2] D.P. Divincenzo, Science 270, 255 (1995) http://dx.doi.org/10.1126/science.270.5234.255[Crossref]
  • [3] L.K. Grover, Phys. Rev. Lett. 79, 325 (1997) http://dx.doi.org/10.1103/PhysRevLett.79.325[Crossref]
  • [4] J.I. Cirac, P. Zoller, Nature 404, 579 (2000) http://dx.doi.org/10.1038/35007021[Crossref]
  • [5] M.A. Nielsen, I.L. Chuang, Quantum Computation and Quantum Information (Cambridge University Press, Cambridge, 2000)
  • [6] D. Braun, Phys. Rev. Lett. 89, 277901 (2002) http://dx.doi.org/10.1103/PhysRevLett.89.277901[Crossref]
  • [7] M.S. Kim, J. Lee, D. Ahn, P.L. Knight, Phys. Rev. A 65, 040101(R) (2002) http://dx.doi.org/10.1103/PhysRevA.65.040101[Crossref]
  • [8] B. Kraus, J.I. Cirac, Phys. Rev. Lett. 92, 013602 (2004) http://dx.doi.org/10.1103/PhysRevLett.92.013602[Crossref]
  • [9] S. Schneider, G.J. Milburn, Phys. Rev. A 65, 042107 (2002) http://dx.doi.org/10.1103/PhysRevA.65.042107[Crossref]
  • [10] S. Maniscalco et al., Phys. Rev. Lett. 100, 090503 (2008) http://dx.doi.org/10.1103/PhysRevLett.100.090503[Crossref]
  • [11] S. Das, G. S. Agarwal, J. Phys. B 42, 141003 (2009) http://dx.doi.org/10.1088/0953-4075/42/14/141003[Crossref]
  • [12] Y. Li, B. Luo, H. Guo, Hong, Phys. Rev. A 84, 012316 (2011) http://dx.doi.org/10.1103/PhysRevA.84.012316[Crossref]
  • [13] D. Mundarain, M. Orszag, Phys. Rev. A 79, 052333 (2009) http://dx.doi.org/10.1103/PhysRevA.79.052333[Crossref]
  • [14] X.Y. Yu, J.H. Li, EPL 92, 40002 (2010) http://dx.doi.org/10.1209/0295-5075/92/40002[Crossref]
  • [15] J. Li, K. Chalapat, G.S. Paraoanu, J. Low Temp. Phys. 153, 294 (2008) http://dx.doi.org/10.1007/s10909-008-9843-1[Crossref]
  • [16] Y.J. Zhang, Z.X. Man, Y.J. Xia, J. Phys. B 42, 095503 (2009) http://dx.doi.org/10.1088/0953-4075/42/9/095503[Crossref]
  • [17] M. Yonac, T. Yu, J.H. Eberly, J. Phys. B 40, 545 (2007) http://dx.doi.org/10.1088/0953-4075/40/9/S02[Crossref]
  • [18] M. Al-Amri, G.X. Li, R. Tan, M.S. Zubairy, Phys. Rev. A 80, 022314 (2009) http://dx.doi.org/10.1103/PhysRevA.80.022314[Crossref]
  • [19] L. Mazzola, S. Maniscalco, J. Piilo, K.-A. Suominen, B.M. Garraway, Phys. Rev. A 79, 042302 (2009) http://dx.doi.org/10.1103/PhysRevA.79.042302[Crossref]
  • [20] S.G. Clark, A.S. Parkins, Phys. Rev. Lett. 90, 047905 (2003) http://dx.doi.org/10.1103/PhysRevLett.90.047905[Crossref]
  • [21] L.M. Duan, H.J. Kimble, Phys. Rev. Lett. 90, 253601 (2003) http://dx.doi.org/10.1103/PhysRevLett.90.253601[Crossref]
  • [22] M.B. Plenio, S.F. Huelga, Phys. Rev. Lett. 88, 197901 (2002) http://dx.doi.org/10.1103/PhysRevLett.88.197901[Crossref]
  • [23] J.B. Xu, S.B. Li, New J. Phys. 7, 72 (2005) http://dx.doi.org/10.1088/1367-2630/7/1/072[Crossref]
  • [24] V.S. Malinovsky, I.R. Sola, Phys. Rev. Lett. 93, 190502 (2004) http://dx.doi.org/10.1103/PhysRevLett.93.190502[Crossref]
  • [25] T. Yu, J.H. Eberly, Phys. Rev. Lett. 93, 140404 (2004) http://dx.doi.org/10.1103/PhysRevLett.93.140404[Crossref]
  • [26] Z. Fieck, R. Tanas, Phys. Rev. A 77, 054301 (2008) http://dx.doi.org/10.1103/PhysRevA.77.054301[Crossref]
  • [27] X.P. Liao, Phys. Lett. A 367, 436 (2007) http://dx.doi.org/10.1016/j.physleta.2007.03.039[Crossref]
  • [28] R.R. Puri, Mathematical Methods of Quantum Optics (Springer, Berlin, 2001) http://dx.doi.org/10.1007/978-3-540-44953-9[Crossref]
  • [29] Z. Ficek, R. Tanas, Phys. Rep. 372, 369 (2002) http://dx.doi.org/10.1016/S0370-1573(02)00368-X[Crossref]
  • [30] G.X. Li, K. Allaart, D. Lenstra, Phys. Rev. A 69, 055802 (2004) http://dx.doi.org/10.1103/PhysRevA.69.055802[Crossref]
  • [31] R.H. Dicke, Phys. Rev. 93, 99 (1954) http://dx.doi.org/10.1103/PhysRev.93.99[Crossref]
  • [32] R.H. Lehmberg, Phys. Rev. A 2, 883 (1970) http://dx.doi.org/10.1103/PhysRevA.2.883[Crossref]
  • [33] R.H. Lehmberg, Phys. Rev. A 2, 889 (1970) http://dx.doi.org/10.1103/PhysRevA.2.889[Crossref]
  • [34] V.S. Malinovsky, I.R. Sola, Phys. Rev. Lett. 93, 190502 (2004) http://dx.doi.org/10.1103/PhysRevLett.93.190502[Crossref]
  • [35] J.I. Cirac, Phys. Rev. A 46, 4354 (1992) http://dx.doi.org/10.1103/PhysRevA.46.4354[Crossref]
  • [36] P. Zhou, S. Swain, Phys. Rev. A 54, 2455 (1996) http://dx.doi.org/10.1103/PhysRevA.54.2455[Crossref]
  • [37] G.S. Agarwal, W. Lange, H. Walther, Phys. Rev. A 48, 4555 (1993) http://dx.doi.org/10.1103/PhysRevA.48.4555[Crossref]
  • [38] W.K. Wootters, Phys. Rev. Lett. 80, 2245 (1998) http://dx.doi.org/10.1103/PhysRevLett.80.2245[Crossref]
  • [39] S. Hill, W.K. Wootters, Phys. Rev. Lett. 78, 5022 (1997) http://dx.doi.org/10.1103/PhysRevLett.78.5022[Crossref]
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11534-013-0326-x
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.