借助于狄拉克的正则量子化原理,对电容耦合的双约瑟夫森结电荷量子比特体系实施量子化.考虑到平行于约瑟夫森结面的磁场对结电流的影响,提出了一种新的电荷量子比特的调控方法,并且讨论了外加磁场作用下体系量子态时间演化的拉比振荡现象及纠缠特性.结果表明,利用该体系可以制备纠缠态,改变外加磁通φ1和φ2的大小能够实现对电荷量子比特及其纠缠态的有效调控.
参考文献
| [1] | Nielsen M A;Chuang I L.Quantum Computation and Quantum Information[M].London:Cambridge University Press,2000:2-12. |
| [2] | Matthew T. Bell;Joshua Paramanandam;Lev B. Ioffe;Michael E. Gershenson.Protected Josephson Rhombus Chains[J].Physical review letters,201416(16):167001.1-167001.5. |
| [3] | Gonzalez-Ballestero C;Moreno E;Garcia-Vidal F J.Generation,manipulation,and detection of two-qubit entanglement in waveguide QED[J].Physical Review A,201489(4):042328. |
| [4] | Chiorescu, I;Bertet, P;Semba, K;Nakamura, Y;Harmans, CJPM;Mooij, JE.Coherent dynamics of a flux qubit coupled to a harmonic oscillator[J].Nature,20047005(7005):159-162. |
| [5] | Turchette Q A;Hood C J;Lange W.Measurement of conditional phase shifts for quantum logic[J].Physical Review Letters,199575(25):4710-4713. |
| [6] | Wallraff, A;Schuster, DI;Blais, A;Frunzio, L;Huang, RS;Majer, J;Kumar, S;Girvin, SM;Schoelkopf, RJ.Strong coupling of a single photon to a superconducting qubit using circuit quantum electrodynamics[J].Nature,20047005(7005):162-167. |
| [7] | 何娟;丁智勇;吴韬;于立志;倪致祥.实现三比特量子控制相位门的离子阱方案[J].量子电子学报,2011(4):429-433. |
| [8] | Vandersypen L M K;Steffen M;Breyta G.Experimental realization of Shor's quantum factoring algorithm using nuclear magnetic resonance[J].NATURE,2001414(6866):883-887. |
| [9] | 赵娜;刘建设;李铁夫;陈炜.超导量子比特的耦合研究进展[J].物理学报,2013(1):6-20. |
| [10] | 梁宝龙;王继锁;孟祥国;李艳玲.含有超导约瑟夫森结介观互感电路的量子化及其量子效应[J].量子电子学报,2007(5):561-568. |
| [11] | Nakamura Y;Pashkin Yu A;Tsai J S.Coherent control of macroscopic quantum states in a single-Cooper-pair box[J].NATURE,1999398(6730):786-788. |
| [12] | Orlando T P;Mooij J E;Tian L.Superconducting persistent-current qubit[J].Physical Review B:Condensed Matter,199960(22):15398-15413. |
| [13] | 史强;闫珂柱;王晓丽;刘志泉.三结磁通量子比特中处于亚稳态粒子的热逃逸和量子隧穿[J].量子电子学报,2012(6):723-728. |
| [14] | Pashkin YA;Yamamoto T;Astafiev O;Nakamura Y;Averin DV;Tsai JS.Quantum oscillations in two coupled charge qubits.[J].Nature,20036925(6925):823-826. |
| [15] | Huang Kun;Han Ruqi.固体物理学[M].北京:高等教育出版社,1988:508-510. |
| [16] | 梁宝龙;李艳玲;孟祥国;王继锁.介观RLC电路的量子化及其在有限温度下的量子效应[J].量子电子学报,2007(3):335-340. |
| [17] | Liang Baolong;Wang Jisuo;Meng Xiangguo.Quantum entanglement and control in capacitively coupled charge qubit circuit[J].Chin Phys B,201019(1):010315. |
| [18] | Kim MD;Cho SY.Entanglement and Bell states in superconducting flux qubits[J].Physical review, B. Condensed matter and materials physics,200713(13):4514-1-4514-5-0. |
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