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We examine the logical qubit system of a pair of electron spins in doublequantum dots. Each electron experiences a different hyperfine interaction withthe local nuclei of the lattice, leading to a relative phase difference, andthus decoherence. Methods such as nuclei polarization, state narrowing, andspin-echo pulses have been proposed to delay decoherence. Instead we propose tosuppress hyperfine dephasing by adiabatic rotation of the dots in real space,leading to the same average hyperfine interaction. We show that the additionaleffects due to the motion in the presence of spin-orbit coupling are stillsmaller than the hyperfine interaction, and result in an infidelity below10^{-4} after ten decoupling cycles. We discuss a possible experimental setupand physical constraints for this proposal.

Suppression of Hyperfine Dephasing by Spatial Exchange of Double Quantum Dots