摘要We implement a two-atom (swap)1/2 gate via cavity QED. During the preparation, a cavity-assisted collision between atoms is required, and this does not need any auxiliary atom. The cavity is only virtually excited, thus our scheme is insensitive to the cavity field states and to the cavity decay. The scheme can be implemented by the present cavity QED techniques.
Abstract:We implement a two-atom (swap)1/2 gate via cavity QED. During the preparation, a cavity-assisted collision between atoms is required, and this does not need any auxiliary atom. The cavity is only virtually excited, thus our scheme is insensitive to the cavity field states and to the cavity decay. The scheme can be implemented by the present cavity QED techniques.
(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
引用本文:
LIU Qi;YE Liu. Implementation of a Two-Atom (swap)1/2 Gate in Cavity QED[J]. 中国物理快报, 2007, 24(3): 599-601.
LIU Qi, YE Liu. Implementation of a Two-Atom (swap)1/2 Gate in Cavity QED. Chin. Phys. Lett., 2007, 24(3): 599-601.
[1] Barenco A et al 1995 Phys. Rev. A 52 3457 [2] Nielsen M A et al Quantum Computation and QuantumInformation (Cambridge: Cambridge University Press) pp 171--221 [3] Khaneja N et al 2001 Phys. Rev. A 63 032308 [4] Vidal G et al 2002 Phys. Rev. Lett. 88 237902 [5] Bremner M J et al 2002 Phys. Rev. Lett. 89 247902 [6] Zhang J et al e-print quant-ph/0212109 [7] Fredkin E et al 1982 Int. J. Theor. Phys 21 219 [8] Zheng Y Z et al 2004 Chin. Phys. Lett. 21 9 [9] Lacour X et al 2006 Phys. Rev. A 73 042321 [10] Gruska J Quantum Computing (Cambridge: CambridgeUniversity Press) pp 111--130 [11] Knill E et al 2001 Nature 409 46 [12] Pittman T B et al 2001 Phys. Rev. A 64 062311 [13] Knill E 2002 Phys. Rev. A 66 052306 [14] Knill E 2003 Phys. Rev. A 68 064303 [15] Brion E et al 2006 Eur. Phys. J. D 38 381 [16] Eckert K et al 2002 Phys. Rev. A 66 042317 [17] Cai Q Y 2004 Chin. Phys. Lett. 21 1189 [18] Franson J D et al 2004 Phys. Rev. A 70 062302 [19] Barenco A et al 1995 Phys. Rev. Lett. 74 4083 [20] Sleator T et al 1995 Phys. Rev. Lett. 74 4087 [21] Domokos P et al 1995 Phys. Rev. A 52 3554 [22] Pellizzari T et al 1995 Phys. Rev. Lett. 75 3788 [23] Davidovich L et al 1994 Phys. Rev. A 50 R895 [24] Cirac J I et al 1994 Phys. Rev. A 50 R4441 [25] Moussa M H Y 1996 Phys. Rev. A 54 4661 [26] Zheng S B 1999 Opt. Commun. 167 111 [27] Zheng S B et al 2000 Phys. Rev. Lett 85 2392 [28] Osnaghi S et al 2001 Phys. Rev. Lett 87 037902