Quantum logic operations on two distant atoms trapped in two optical-fibre-connected cavities
Zhang Ying-Qiao(张英俏)a)b)†, Zhang Shou(张寿)a), Yeon Kyu-Hwangb), and Yu Seong-Chob)
aDepartment of Physics, College of Science, Yanbian University, Yanji 133002, China; bBK21 Physics Program and Department of Physics, College of Natural Sciences, Chungbuk National University, Cheongju, Chungbuk, 361-763, Republic of Korea
Abstract Based on the coupling of two distant three-level atoms in two separate optical cavities connected with two optical fibres, schemes on the generation of several two-qubit logic gates are discussed under the conditions of and . Discussion and analysis of the fidelity, gate time and experimental setups show that our schemes are feasible with current optical cavity, atomic trap and optical fibre techniques. Moreover, the atom--cavity--fibre coupling can be used to generate an -qubit nonlocal entanglement and transfer quantum information among distant atoms by arranging atom--cavity assemblages in a line and connecting each two adjacent cavities with two optical fibres.
Zhang Ying-Qiao(张英俏), Zhang Shou(张寿), Yeon Kyu-Hwang, and Yu Seong-Cho Quantum logic operations on two distant atoms trapped in two optical-fibre-connected cavities 2011 Chin. Phys. B 20 120310
[1]
Palma G M, Suominen K A and Ekert A K 1996 Proc. R. Soc. Lond. A 452 567
[2]
DiVincenzo D P and Loss D 1998 Superlattice Microstruc. 23 419
[3]
Cirac J I, Ekert A K, Huelga S F and Macchiavello C 1999 Phys. Rev. A 59 4249
[4]
Paternostro M, Kim M S and Palma G M 2003 J. Mod. Opt. 50 2075
[5]
Xia Y, Song J and Song H S 2008 Chin. Phys. Lett. 25 3150
[6]
Song J, Xia Y and Song H S 2009 Europhys. Lett. 87 50005
[7]
Lin L H 2009 Chin. Phys. B 18 1867
[8]
Xia Y, Song J, Lu P M and Song H S 2011 J. Phys. B: At. Mol. Opt. Phys. 44 025503
[9]
Serafini A, Mancini S and Bose S 2006 Phys. Rev. Lett. 96 010503
[10]
Yin Z Q and Li F L 2007 Phys. Rev. A 75 012324
[11]
Yang Z B, Wu H Z, Su W J and Zheng S B 2009 Phys. Rev. A 80 012305
[12]
Ye S Y and Zheng S B 2008 Opt. Commun. 281 1306
[13]
Zheng S B 2009 Appl. Phys. Lett. 94 154101
[14]
Li Y L, Fang M F and Zeng K 2010 Chin. Phys. B 19 010307
[15]
Zheng S B 2010 Chin. Phys. B 19 064204
[16]
Zheng S B, Yang C P and Nori F 2010 Phys. Rev. A 82 042327
[17]
Spillane S M, Kippenberg T J, Vahala K J, Goh K W, Wilcut E and Kimble H J 2005 Phys. Rev. A 71 013817
[18]
Boca A, Miller R, Birnbaum K M, Boozer A D, McKeever J and Kimble H J 2004 Phys. Rev. Lett. 93 233603
[19]
Braginsky V B, Gorodetsky M L and Ilchenko V S 1989 Phys. Lett. A 137 393
[20]
Gorodetsky M L, Savchenkov A A and Ilchenko V S 1996 Opt. Lett. 21 453
[21]
Vernooy D W, Ilchenko V S, Mabuchi H, Streed E W and Kimble H J 1998 Opt. Lett. 23 247
[22]
Armani D K, Kippenberg T J, Spillane S M and Vahala K J 2003 Nature 421 925
[23]
Spillane S M, Kippenberg T J, Painter O J and Vahala K J 2003 Phys. Rev. Lett. 91 043902
[24]
Knight J C, Cheung G, Jacques F and Birks T A 1997 Opt. Lett. 22 1129
[25]
Cai M, Painter O and Vahala K J 2000 Phys. Rev. Lett. 85 74
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.
