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Condensed Matter > Materials Science

arXiv:cond-mat/0503107v1 (cond-mat)
[Submitted on 4 Mar 2005 ]

Title: Spin Diffusion and Relaxation in Solid State Spin Quantum Computer

Title: 固态自旋量子计算机中的自旋扩散和弛豫

Authors:G.P. Berman, B.M. Chernobrod, V.N. Gorshkov (Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico)V.I. Tsifrinovich (IDS Department, Polytechnic University, Brooklyn, NY)
Abstract: The processes of spin diffusion and relaxation are studied theoretically and numerically for quantum computation applications. Two possible realizations of a spin quantum computer (SQC) are analyzed: (i) a boundary spin chain in a 2D spin array and (ii) an isolated spin chain. In both cases, spin diffusion and relaxation are caused by a fast relaxing spin located outside the SQC. We have shown that in both cases the relaxation can be suppressed by an external non-uniform magnetic field. In the second case, our computer simulations have revealed various types of relaxation processes including the excitation of a random distribution of magnetic moments and the formation of stationary and moving domain walls. The region of optimal parameters for suppression of rapid spin relaxation is discussed.
Comments: 15 pages uncluding 23 figures
Subjects: Materials Science (cond-mat.mtrl-sci)
Cite as: arXiv:cond-mat/0503107 [cond-mat.mtrl-sci]
  (or arXiv:cond-mat/0503107v1 [cond-mat.mtrl-sci] for this version)
  https://doi.org/10.48550/arXiv.cond-mat/0503107
Related DOI: https://doi.org/10.1016/j.physleta.2005.11.044

Submission history

From: Vyacheslav Gorshkov Mr [view email]
[v1] Fri, 4 Mar 2005 16:27:48 UTC (603 KB)
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