全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

基于磁共振压力显微系统的量子保真度

, PP. 180-185

Keywords: 量子光学,保真度,磁共振压力显微,悬臂偏移,射频磁场

Full-Text   Cite this paper   Add to My Lib

Abstract:

在不同的初始态条件下,基于磁共振压力显微系统探讨两原子的量子态保真度随时间的变化。结果表明在不同的初态条件下,保真度随时间的演化曲线不同。悬臂偏移量引起的磁场偏差以及自旋与射频磁场的相互作用使得保真度的周期大大的缩短,从而可以在更短的时间间隔内使量子信息恢复到最原始的初态。同时射频磁场可以使得量子信息在传播过程中接近理想状态。这为探测样品中的原子状态以及提高量子信息在传递过程中的准确率提供了一定的保证。

References

[1]  Shao X Q, Wang H F and Chen L. Three-qubit phase gate on three modes of a cavity. Optics Communications,2009, 282(23): 4643-4646.
[2]  Stipe B C ,Mamin H J , Stowe T D , et al. Magnetic dissipation and fluctuations in individual nano-magnets measured by ultrasensitive cantilever magnetometry [J ] . Phys. Rev. Lett . ,2001 , 86 (13) :2874-2877.
[3]  Shao X Q, Wang H F, Chen L, Zhang S and Yeon K H. Distributed CNOT gate via quantum Zeno dynamics. Journal Of The Optical Society Of Americab-Optical Physics.2009,26(12):2440-2444.
[4]  D. Rugar, R. Budakian, H. J. Mamin and B. W. Chui. Single spin detection by magnetic resonance force microscopy. Nature ,2004,430(6997):329-332.
[5]  Luming Duan and Guangcan Guo.Perturbative expansions for the fidelities
[6]  and spatially correlated dissipation of quantum bits.Phys.Rev.A,1997,56(6):4466-4470.
[7]  I Charles H.Bennett,David P.DiVincenzo,Quantum information and computation[J].Nature,2000,404:247-255.
[8]  Xia Yunjie, Yan Kezhu, Kong Xianghe, Chen Wanping. The information entropy and fidelity of quantum states in flight field. Acta Sinica Quantum Optica(量子光学学报)1996, 2(1):24-31(in Chinese).
[9]  Li Yunjie, Zhang Yanli. The evolution of quantum fidelity in degenerate Raman process. Chinese Journal of Quantum Electronics(量子电子学报).2004,21(4):468-472(in Chinese).
[10]  Wang Xiangbin, Oh C H, Kwek L C. Dures fidelity of displaced squeezed thermal states[J]. Phys. Rev. A,1998,58(5):4186-4190.
[11]  Jossa R. Fidelity for mixes quantum states [J]. J. Mof.Opt.,1994,41(12):2315-2323
[12]  G. P. Berman and V. I. Tsifrinovich . Solid-state nuclear-spin quantum computer based on magnetic resonance force microscopy. Phys. Rev. B,2000, 61(21):14694-14699
[13]  G. P. Berman, F. Borgonovi and V. N. Gorshkov Magnetic Resonance Force Microscopy and a Single-Spin Measurement 2006 World Scientific Publishing Co. Pte. Ltd 981-256-693-7 .

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133