Relaxation Optimized Transfer of Spin Order in Ising Spin Chains

Details Relaxation Optimized Transfer of Spin Order in Ising Spin Chains Relaxation Optimized Transfer of Spin Order in Ising Spin Chains

2005-05-15

arxiv.org/abs/quant-ph/0505116v2

Physics

Quantum Physics

7 pages, 7 figures

Scientific paper

10.1103/PhysRevA.72.062320

In this manuscript, we present relaxation optimized methods for transfer of bilinear spin correlations along Ising spin chains. These relaxation optimized methods can be used as a building block for transfer of polarization between distant spins on a spin chain. Compared to standard techniques, significant reduction in relaxation losses is achieved by these optimized methods when transverse relaxation rates are much larger than the longitudinal relaxation rates and comparable to couplings between spins. We derive an upper bound on the efficiency of transfer of spin order along a chain of spins in the presence of relaxation and show that this bound can be approached by relaxation optimized pulse sequences presented in the paper.

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