Effective protocol for preparation of three-atom Greenberger-Horne-Zeilinger state and W state with the help of cross-Kerr nonlinearity
Tóm tắt
We propose a protocol to generate a Greenberger-Horne-Zeilinger (GHZ) state andWstate by using simple linear elements and quantum nondemolition detectors (QNDs). With the help of cross-Kerr nonlinearity, our protocol can generate the intended states with only one setup, and the probability of getting a W state is greatly increased when compared with previous schemes [Phys. Rev. A 75 (2007) 044301]. Also, our proposed protocol is realizable in experiments.
Từ khóa
Tài liệu tham khảo
M. Hillery, V. BuŽek, A. Berthiaume, Phys. Rev. A 59, 1829 (1999)
J. Kempe, Phys. Rev. A 60, 910 (1999)
A. Karlsson, M. Bourennane, Phys. Rev. A 58, 4349 (1998)
B. S. Shi, A. Tomita, Phys. Lett. A 296, 161 (2002)
V. N. Gorbachev, A. I. Trubilko, A. A. Rodichkina, A. I. Zhiliba, Phys. Lett. A 314, 267 (2003)
V. BuŽek, M. Hillery, Phys. Rev. A 54, 1884 (1996)
L. M. Duan, H. J. Kimble, Phys. Rev. Lett. 90, 253501 (2003)
H. Mikami, Y. Li, T. Kobayashi, Phys. Rev. A 70, 052308 (2004)
T. Yamamoto, K. Tamaki, M. Koashi, N. Imoto, Phys. Rev. A 66, 064301 (2002)
M. Eibl, M. Bourennane, C. Kurtsiefer, H. Weinfurter, Phys. Rev. Lett. 92, 077901 (2004)
D. Leibfried et al., Nature (London) 438, 639 (2005)
H. Häffer et al., Nature (London) 438, 643 (2005)
A. Rauschenbeutel et al., Science 288, 2024 (2000)
Y. Xia, J. Song, H. S. Song, Appl. Phys. Lett. 92, 021127 (2008)
J. Song, Y. Xia, H. S. Song, Phys. Rev. A 78, 024302 (2008)
X. B. Zou, K. Pahlke, W. Mathis, Phys. Rev. A 66, 044302 (2002)
X. B. Zou, K. Pahlke, W. Mathis, Phys. Rev. A 68, 024302 (2003)
X. B. Zou, K. Pahlke, W. Mathis, Phys. Rev. A 89, 052314 (2004)
C. S. Yu, X. X. Yi, H. S. Song, D. Mei, Phys. Rev. A 75, 044301 (2007)
T. C. Wei, J. T. Barreiro, P. G. Kwiat, Phys. Rev. A 75, 060305(R) (2007)
K. Nemoto, W. J. Munro, Phys. Rev. Lett. 93, 250502 (2004)
H. F. Hofmann, K. Kojima, S. Takeuchi, K. Sasaki, J. Opl. B 5, 218 (2003)
C. Wittmann, U. L. Andersen, M. Takeoka, D. Sych, G. Leuchs, Phys. Rev. A 81, 062338 (2010)
Y. B. Sheng, F. G. Deng, G. L. Long, Phys. Rev. A 82, 032318 (2010)
W. Lange, H. J. Kimble, Phys. Rev. A 61, 063817 (2000)
J. Hong, H. W. Lee, Phys. Rev. Lett. 89, 237901 (2002)