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ENTANGLEMENT CONCENTRATION AND A QUANTUM REPEATER IN CAVITY QED

Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China

Department of Physics, Anhui University, Hefei 230039, China

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and

GUANG-CAN GUO

Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China

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https://doi.org/10.1142/S0219749905001018Cited by:1 (Source: Crossref)

Abstract

A scheme of quantum concentration for unknown atomic entangled states via cavity QED is proposed. During the preparation and the joint measurement of quantum states, the cavity is only virtually excited; thus, the scheme is insensitive to the cavity field states and the cavity decay. In the meanwhile, our setup also provides a demonstration of a quantum repeater in cavity QED in principle.

Keywords:

PACS: 03.67.-a, 03.65.Bz

References

C. H. Bennettet al., Phys. Rev. Lett. 70, 1895 (1993). Crossref, Web of Science, Google Scholar
C. H. Bennettet al., Phys. Rev. Lett. 69, 2881 (1992). Crossref, Web of Science, Google Scholar
A. K. Ekert, Phys. Rev. Lett. 67, 661 (1991). Crossref, Web of Science, Google Scholar
P. G. Kwiat, K. Mattle, H. Weinfurter, A. Zeilinger, A. V. Sergienko and Y. Shih, Phys. Rev. Lett. 75, 4337 (1995); A. G. White, D. F. V. James, P. H. Eberhard and P. G. Kwiat, ibid. 83, 3103 (1999) . Google Scholar
J. W. Pan and A. Zeilinger, Phys. Rev. A57, 2208 (1998); J. W. Pan, D. Bouwmeester, M. Daniell, H. Weinfurter and A. Zeilinger, Nature (London) 403, 515 (2000); J. W. Pan, et al., Phys. Rev. Lett. 86, 4435 (2001) . Google Scholar
C. C. Gerry, Phys. Rev. A53, 4591 (1996); S. B. Zheng and G. C. Guo, J. Mod. Opt. 44, 963 (1997); S. B. Zheng, J. Opt. B: Quant. Semiclass. Opt. 1, 534 (1999); E. S. Guerra and J. C. Retamal, J. Mod. Opt. 46, 295 (1999); A. Rauschenbeutel, G. Nogues, S. Osnaghi, P. Bertet, M. Brune, J. M. Raimond and S. Haroche, Science 288, 2024 (2000); G. C. Guo and Y. S. Zhang, Phys. Rev. A65, 054302 (2002) . Google Scholar
S. B. Zheng and G. C. Guo, Phys. Rev. Lett. 85, 2392 (2000). Crossref, Web of Science, Google Scholar
S. Osnaghiet al., Phys. Rev. Lett. 87, 037902 (2001). Crossref, Web of Science, Google Scholar
X. B. Zou, K. Pahlke and W. Mathis, Phys. Rev. A 67, 044301 (2003). Crossref, Web of Science, Google Scholar
G. P. Guo, C. F. Li, J. Li and G. C. Guo, Phys. Rev. A65, 042102 (2002); S. B. Zheng, Phys. Rev. Lett. 87, 230404 (2001) . Google Scholar
C. Bennettet al., Phys. Rev. A 54, 3824 (1996). Crossref, Web of Science, Google Scholar
T. Yamamotoet al., Nature 421, 343 (2003). Crossref, Web of Science, Google Scholar
Z. Zhaoet al., Phys. Rev. Lett. 90, 207901 (2003). Crossref, Web of Science, Google Scholar
X. B. Wang and H. Fan, Phys. Rev. A 68, 060302(R) (2003). Google Scholar
L. Yeet al., J. Opt. B: Quant. Semiclass. Opt. 4, 215 (2002). Crossref, Google Scholar
J. L. Romeroet al., Phys. Rev. A 65, 052319 (2002). Crossref, Web of Science, Google Scholar
P. Lougovski, E. Solano and H. Walther , quant-ph/0308059 . Google Scholar
H. J. Briegelet al., Phys. Rev. Lett. 81, 5932 (1998). Crossref, Web of Science, Google Scholar
E. T. Jaynes and F. W. Cummings, Proc. IEEE 51, 89 (1963). Crossref, Web of Science, Google Scholar
J. M. Raimond, M. Brune and S. Haroche, Rev. Mod. Phys. 73, 565 (2001). Crossref, Web of Science, Google Scholar