Experimental characterization of coherent magnetization transport in a one-dimensional spin system
arXiv:1102.3400 · doi:10.1088/1367-2630/13/10/103015
Abstract
We experimentally characterize the non-equilibrium, room-temperature magnetization dynamics of a spin chain evolving under an effective double-quantum Hamiltonian. We show that the Liouville space operators corresponding to the magnetization and the two-spin correlations evolve 90 degrees out of phase with each other, and drive the transport dynamics. For a nearest-neighbor-coupled N-spin chain, the dynamics are found to be restricted to a Liouville operator space whose dimension scales only as N^2, leading to a slow growth of multi-spin correlations. Even though long-range couplings are present in the real system, we find excellent agreement between the analytical predictions and our experimental results, confirming that leakage out of the restricted Liouville space is slow on the timescales investigated. Our results indicate that the group velocity of the magnetization is 6.04 +/- 0.38 um/s, corresponding to a coherent transport over N ~ 26 spins on the experimental timescale. As the double-quantum Hamiltonian is related to the standard one-dimensional XX Hamiltonian by a similarity transform, our results can be directly extended to XX quantum spin chains, which have been extensively studied in the context of both quantum magnetism and quantum information processing.
16 pages, 9 figures
References in corpus (15)
- Electron wavepacket propagation and entanglement in a chain of coupled quantum dots
- Optimal dynamics for quantum-state and entanglement transfer through homogeneous quantum wires
- Simulations of Information Transport in Spin Chains
- NMR quantum simulation of localization effects induced by decoherence
- Efficient multiqubit entanglement via a spin-bus
- Multi-spin dynamics of the solid-state NMR Free Induction Decay
- Dynamics and Control of a Quasi-1D Spin System
- Coherent state transfer via highly mixed quantum spin chains
- Effective one-body dynamics in multiple-quantum NMR experiments
- Engineering correlation and entanglement dynamics in spin systems
- Encoding multiple quantum coherences in non-commuting bases
- Spin diffusion of correlated two-spin states in a dielectric crystal
- Comment on "Anomalous Thermal Conductivity of Frustrated Heisenberg Spin Chains and Ladders"
- Selective coherence transfers in homonuclear dipolar coupled spin systems
- Quantum simulation of spin ordering with nuclear spins in a solid state lattice
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