孙荣辉;叶明勇;陈俊杰;林秀敏;

• 1:福建师范大学物理与能源学院

摘要(Abstract)：

基于由具有2N+1个稳定基态和N个里德堡态原子组成的系综系统,采用对称集体态编码、偶极封锁效应并控制激光和系综相互作用时间,成功制备了多粒子W态.这种编码方法有效克服了以往由于偶极封锁效应仅在一定范围内有效从而导致难以拓展到多粒子情形的限制.最后讨论了该方案的实验可行性.

关键词(KeyWords)： 里德堡态;偶极封锁;W态;集体编码

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(6127521511004033);; 国家基础研究项目(2011CBA00203);; 福建省自然科学基金资助项目(2010J01002);; 校级大学生创新创业训练计划(cxxl-2012076)

作者(Authors): 孙荣辉;叶明勇;陈俊杰;林秀敏;

参考文献(References)：

• [1]Bennett C H,Brassard G,Crépeau C,et al.Teleporting an unknown quantum state via dual classical and einstein-podol-sky-rosen channels[J].Physical Review Letters,1993,70(13):1895-1899.
• [2]Mattle K,Weinfurter H,Kwiat P G,et al.Dense coding in experimental quantum communication[J].Physical ReviewLetters,1996,76(25):4656-4659.
• [3]Raimond J M,Vitrant G,Haroche S.Spectral line broadening due to the interaction between very excited atoms:thedense rydberg Gas[J].Phys B,1981,14:L655-L660.
• [4]Saffman M,Walker T G,Mlmer K.Quantum information with Rydberg atoms[J].Reviews of Modern Physics,2010,82(3):2313-2363.
• [5]Lukin M D.Colloquium:Trapping and manipulating photon states in atomic ensembles[J].Reviews of Modern Physics,2003,75(2):457-472.
• [6]Jaksch D,Cirac J I,Zoller P,et al.Fast quantum gates for neutral atoms[J].Physical Review Letters,2000,85(10):2208-2211.
• [7]Lukin M D,Fleischhauer M,Cote R,et al.Dipole blockade and quantum information processing in mesoscopic atomicensembles[J].Physical Review Letters,2001,87:037901.
• [8]Saffman M,Walker T G.Creating single-atom and single-photon sources from entangled atomic ensembles[J].PhysicalReview A,2002,66:065403.
• [9]Saffman M,Walker T G.Entangling single-and N-atom qubits for fast quantum state detection and transmission[J].Physical Review A,2005,72:042302.
• [10]Mller D,Madsen L B,Mlmer K.Quantum gates and multiparticle entanglement by rydberg excitation blockade andadiabatic passage[J].Physical Review Letters,2008,100:170504.
• [11]Tong D,Farooqi S M,Stanojevic J,et al.Local blockade of rydberg excitation in an ultracold Gas[J].Phys RevLett,2004,93:063001-063004.
• [12]Singer K,Reetz-lamour M,Amthor T,et al.Suppression of excitation and spectral broadening induced by interactions ina cold Gas of rydberg atoms[J].Phys Rev Lett,2004,93:163001-163004.
• [13]Vogt T,Viteau M,Zhao J M,et al.Dipole blockade at frster resonances in high resolution laser excitation of rydbergstates of cesiumatoms[J].Phys Rev Lett,2006,97:083003-083006.
• [14]Urban E,Johnson T A,Henage T,et al.Observation of rydberg blockade between two atoms[J].Nature Phys,2009,5:110-114.
• [15]Isenhower L,Urban E,Zhang X L,et al.Demonstration of a neutral atom controlled-not quantum gate[J].Phys RevLett,2010,104:010503-010506.
• [16]Wilk T,Gae¨tan A,Evellin C,et al.Entanglement of two individual neutral atoms using rydberg blockade[J].PhysRev Lett,2010,104:010502-010505.
• [17]Zhang X L,Isenhower L,Gill A T,et al.Deterministic entanglement of two neutral atoms via rydberg blockade[J].Phys Rev A,2010,82:030306-030309(R).
• [18]Brion E,Pedersen L H,Saffman M,et al.Error correction in ensemble registers for quantum repeaters and quantumcomputers[J].Physical Review Letters,2008,100:110506.
• [19]Treutlein P,Hommelhoff P,Steinmetz T,et al.Coherence in microchip traps[J].Physical Review Letters,2004,92:203005.
• [20]陈悦华,吴熙,李刚,等.利用偶极封锁制备多粒子三维纠缠态[J].量子光学学报,2012,18(2):147-151.(责任编辑:黄家瑜)櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍櫍