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利用量子比特间交换衰减实现无退纠缠的量子信息传输

, PP. 40-46

Keywords: 量子光学,杂化量子比特,交换衰减,纠缠,信息传输

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Abstract:

在量子信息传输过程中,环境的作用会导致退相干与退纠缠。利用不同类型量子比特的优点,构成杂化量子比特系统是克服退相干效应,实现量子信息传输的一个有效方案。本文指出将耦合量子比特之间信息交换过程中存在的能量损耗(量子比特间的交换衰减),与外部环境的退相干效应有机的结合起来,可以实现无退纠缠效应的量子信息传输。给出了实现无退纠缠效应信息传输,交换衰减率与退相干时间匹配的约束关系。

References

[1]  Li J W, Wu C W and Dai H Y 2011 Chin. Phys. Lett. 28 090302
[2]  Yang W L, Yin Z Q, Hu Y, Feng M and Du J F. High-fidelity quantum memory using nitrogen-vacancy center ensemble for hybrid quantum computation [J]. Phys. Rev. A, 2011, 84: 010301(R).
[3]  Jiang L, Kane C L and Preskill J. Interface between Topological and Superconducting Qubits [J]. Phys. Rev. Lett., 2011, 106: 130504.
[4]  P Rabl, DeMille D, Doyle J M, Lukin M D, Schoelkopf R J and Zoller P. Hybrid Quantum Processors: Molecular Ensembles as Quantum Memory for Solid State Circuits [J]. Phys. Rev. Lett., 2006, 97: 033003.
[5]  Marcos D, Wubs M, Taylor J M, Aguado R, Lukin M D and S?rensen A S. Coupling Nitrogen-Vacancy Centers in Diamond to Superconducting Flux Qubits [J]. Phys. Rev. Lett., 2010, 105: 210501.
[6]  Matsuzaki Y and Nakano H. Enhanced energy relaxation process of a quantum memory coupled to a superconducting qubit [J]. Phys. Rev. B, 2012, 86: 184501.
[7]  Lindblad G. On the generators of quantum dynamical semigroups [J]. Commun. Math. Phy., 1976, 48: 119.
[8]  Wootters W K. Entanglement of Formation of an Arbitrary State of Two Qubits [J]. Phys. Rev. Lett., 1998, 80: 2245.
[9]  Steffen M, Brito F, DiVincenzo D, Kumar S and Ketchen M. Decoherence of floating qubits due to capacitive coupling [J]. New J. Phys., 2009, 11: 033030.
[10]  Rigetti C, Gambetta J M, Poletto S, Plourde B L T, Chow J M, C rcoles A D, Smolin J A, Merkel S T, Rozen J R, Keefe G A, Rothwell M B, Ketchen M B and Steffen M. Superconducting qubit in a waveguide cavity with a coherence time approaching 0.1 ms [J]. Phys. Rev. B., 2012, 86: 100506?
[11]  Koshino K. Quantum anti-Zeno effect by false measurements [J]. Phys. Rev. Lett., 2004, 93: 030401.
[12]  Li P, Zhang Q and You J Q. Dividing two-qubit Hilbert space via abrupt and asymptotic disentanglement [J]. Phys. Rev. A, 2009, 79: 014303.
[13]  Lopez C E, Romero G, Lastra F, Solano E and Retamal J C. Sudden Birth versus Sudden Death of Entanglement in Multipartite Systems [J]. Phys. Rev. Lett. 2008, 101: 080503.
[14]  Ji Y H, Liu Y M and Wang Z S. Avoiding the decay of entanglement for coupling two-qubit system interacting with a non-Markov environment [J]. Chin. Phys. B, 2011, 20: 070304.
[15]  Morton J J L, Tyryshkin A M, Ardavan A, Porfyrakis K, Lyon S A and Briggs G A D. Environmental effects on electron spin relaxation in N@C60 [J]. Phys. Rev. B, 2007, 76: 085418.
[16]  Wei L F, Johansson J R, Cen L X, Ashhab S and Nori F. Controllable Coherent Population Transfers in Superconducting Qubits for Quantum Computing [J]. Phys. Rev. Lett., 2008, 100: 113601.

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