提出一种利用一个2n-能级原子与两个n-模腔相互作用制备2n-模光子GHZ态的方案.在此方案中,2n个量子比特编码在2n个腔模的0-和1-光子Fock态中.由于原子与腔场之间相互作用是共振的,因此耦合强度相对较大,这将缩短所需的相互作用时间,从而降低实验中退相干的影响.
A simple scheme is presented for generating 2n-mode photon Greenberger-Horne-Zeilinger (GHZ) states with the interaction of a 2n-level atom with two n-mode cavities.In the proposed protocol,the 2n qubits are encoded in zero-and one-photon Fock states of 2n cavity modes.Because the interaction between the atom and cavity fields is resonant,the coupling strength can be relative strong. This will shorten the corresponding interaction time and thus reduce the effect of decoherence in experiment.
参考文献
| [1] | Raimond J M,Brune M,et al.Manipulating quantum entanglement with atoms and photons in a cavity[J].Rev.Mod.Phys.,2001,73:565-582. |
| [2] | Tang Shiqing,Zhang Dengyu,et al.Realization of three-qubit controlled-phase gate operation with atoms in cavity QED system[J].Chin.Phys.Lett.,2009,26:020310. |
| [3] | Zhang Yongde.Principle of Quantum Information Physics(量子信息物理原理)[M].Beijing:Science Press,2005(in Chinese). |
| [4] | Raussendorf R,Browne D E,Briegel H J.Measurement-based quantum computation on cluster states[J].Phys.Rev.A,2003,68(2):022312(1-32). |
| [5] | Wang Xinwen,Shah Yongguang,Xia Lixin,et al.Dense coding and teleportation with one-dimensional cluster states[J].Phys.Lett.A,2007,364(1):7-11. |
| [6] | Wang Xinwen,Zhang Dengyu,Tang Shiqing,et al.Multiparty hierarchical quantum-information splitting[J].J.Phys.B:At.Mol.Opt.Phys.,2011,44(3):035505 (1-4). |
| [7] | Zhang Dengyu,Xie Lijun,Tang Shiqing,et al.Time evolution of two coupling two-level atoms entanglement in a single-mode vacuum field[J].Chinese Journal of Quantum Electronics(量子电子学报),2009,26(1):65-68 (in Chinese). |
| [8] | Tang Shiqing,Zhang Dengyu,Gao Feng,et al. Scheme for implementing a three-qubit Toffoli gate resonant interaction in bimode cavity QED system[J].Chinese Journal of Quantum Electronics(量子电子学报),2009,26(5):548-554 (in Chinese). |
| [9] | Dür W,Vidal G,Cirac J I.Three qubits can be entangled in two inequivalent ways[J].Phys.Rev.A,2009,62(6):062314 (1-12). |
| [10] | Khrennikov A,Contextual Approach to Quantum Fomalism[M].Berlin:Springer,2009. |
| [11] | Wang Xinwen,Yang Guojian.Hybrid economical telecloning of equatorial qubits and generation of multipartite entanglement[J].Phys.Rev.A,2009,79(6):062315 (1-11). |
| [12] | Meng Fanyu,Zhu Aidong,Yeon Kyu-Hwang,et al.Preparation of multipartite entangled states and one-step implementation of 1 → M economical phase-covariant quantum anti-cloning in cavity QED[J].Phys.Scr.,2010,81(1):015009(1-5). |
| [13] | Zheng Shibiao.One-step synthesis of multiation Greenberger-Home-Zeilinger states[J].Phys.Rev.Lett.,2001,87(23):230404. |
| [14] | Wu Chunfeng,Chen Jingling,Kwek L C,et al.Quantum nonlocality of N-qubit W states[J].Phys.Rev.A,2006,73(1):012310(1-5). |
| [15] | James D F.Quantum computation with hot and cold trapped ions:an assessment of proposed schemes[J].Fortschr.Phys.,2000,48:823-837. |
| [16] | Xiao Yunfeng,et al.Quantum phase gate in an optical cavity with atomic cloud[J].Phys.Rev.A,2006,74:044303. |
| [17] | Shao Xiaoqiang,Wang Hongfu,Chen Li,et al.Three-qubit phase gate on three modes of a cavity[J].Opt.Commu.,2009,282:4643-4646. |
| [18] | Maunz P,et al.Cavity cooling of a single atom[J].Nature,2004,428:50-52. |
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