Abstract
The effects of dissipative dynamics on the magnitude of entanglement generated In atom-photon interactions inside cavities is studied. We present some concrete examples of environment Induced entanglement in alom-photon interactions. We consider various dissipative atom-cavity systems and show that their collective dynamics can be used to maximize entanglement for intermediate values of the cavity leakage parameter κ. We first consider the interaction of a single two-level atom with one of two coupled microwave cavities and show analytically that the atom-cavity entanglement increases with cavity leakage. We next consider a system of two atoms passing successively through a cavity and derive the expression for the maximum value of in terms of the Rabi angle gt, for which the two-atom entanglement can be Increased. Finally, numerical investigation of micromaser dynamics also reveals the increase of two-atom entanglement with stronger cavity-environment coupling for experimentally attainable values of the micromaser parameters.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M A Nielsen and I L Chuang, Quantum Computation and Quantum Information (Cambridge, UK: Cambridge University Press) (2000)
See, for example, J I Cirac and P Zoller Phys. Rev. A50 R2799 (1994); J I Cirac, P Zoller, H J Kimble and H Mabuchi Phys. Rev. Lett 78 3221 (1997); L -M Duan, M D Lukin, J I Cirac and P Zoller Nature 414 413 (2001); E Solano, G S Agarwal and H Watther Phys. Rev. Lett 90 027903 (2003); S G Clark and A S Parkins Phys. Rev. Lett 90 047905 (2003); L -M Duan, B Wang, H J Kimble Phys. Rev. All 032333 (2005); G S Agarwal and K T Kapale Phys, Rev, A73 022315 (2006)
See, for instance, E Hagley. X Matre. G Nogues, C Wunderlich, M Brune, J M Raimond and S Haroche Phys. Rev, Lett 79 1 (1997); A Rauschenbeutel, P Bertet. S Osnaghi, G Nogues, M Brune, J M Raimond and S Haroche Phys. Rev. A 64 050301(R) (2001); A AufTeves, P Maioli, T Meunier, S Gleyzes. G Nogues, M Brune, J M Raimond and S Haroche Phys, Rev. Lett 91 230405 (2003); S Numann, M Hijlkema, B Weber, F Rohde, G Rempe and A Kuhn Phy. Rev. Lett 95 173602 (2005); D N Matsukevich, T Chanelire, S D Jenkins, S -Y Lan, TAB Kennedy and A Kuzmich Phys. Rev. Lett. 96 030405 (2006)
J M Raimond, M Brune and S Haroche Rev. Mod. Phys. 73 565 (2001)
W H Zurek Phys. Rev. D 26 1662 (1982); E Joos and H D Zeh Z. Phys. B 59 223 (1985)
M S Kim. Jlnhyoung Lee, D Ahn and P L Knight Phys Rev. A 65 040101(R) (2002)
M B Plenio, S F Huelga, A Beige and P L Knight Phys. Rev. A 59 2468 (1999)
S Schneider and G J Milbum Phys. Rev. A 65 042107 (2002); B Kraus and J I Cirac Phys. Rev. Lett. 92 013602 (2004); S -B U and J -B Xu, quant-ph/0505216
M B PJenio and S F Hulega Phys. Rev. Lett. 88 197901 (2002)
D Braun Phys. Rev. Lett. 89 277901 (2002)
G S Agarwal in Springer Tracts in Modem Physics, 70 (Berlin & New York: Springer-Verlag) (1974)
B Ghosh, A S Majumdar and N Nayak Int. J. Quant. Inf. 6 169 (2007)
G Rempe, F Schmidt-Kaler and H Walther Phys. Rev. Lett. 64 2783 (1990)
M Brune, E Hagley, J Dreyer, X Matre, A Maali, C Wunderlich, J M Raimond and S Haroche Phys. Rev. Lett. 77 4887 (1996); M Weidinger, B T H Varcoe, R Heerlein and H Walther Phys. Rev. Lett. 82 3795 (1999)
B Ghosh, A S Majumdar and N Nayak Phys. Rev. A 74 052315 (2007)
S J D Phoenix and S M Bamett J. Mod. Opt 40 979 (1993); J I Cirac and P Zoller Phys. Rev. A 50 R2799 (1994)
A Datta, B Ghosh, A S Majumdar and N Nayak Europhys Lett. 67 934 (2004)
A S Majumdar and N Nayak Phys. Rev. A 64 013A21 (2001)
L Davidovich, N Zagury. M Brune, J M Raimond and S Haroche Phys. Rev A 50 R895 (1994)
S Haroche and J M Raimond in “Advances in Atonic ana Molecular Physics” (eds.) D R Bates and B Bedereon 20 (New York: Academic) (1985)
S Hill and W K Wootters Phys. Rev. Lett. 78 5022 (1997); W K Woofers Phys. Rev. Lett. 80 2245 (1998)
C H Bennett Lecture course in the School on Quantum Physics end information Processing. TIFR, Mumbai, 2002 (http://qpip-server.tcs3.tifr.res.in/qpip/HTML/Courses/Bennett/riFR2,pdf)
B Ghosh, A S Majumdar and N Nayak int J. Quant. Inf. 4 665 (2006)
N Nayak Opt. Commun. 118 114 (1995)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Nayak, N., Ghosh, B. & Majumdar, A.S. Environment induced entanglement in cavity-QED. Indian J Phys 84, 1039–1050 (2010). https://doi.org/10.1007/s12648-010-0098-8
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12648-010-0098-8