Simulations of Information Transport in Spin Chains

Details Simulations of Information Transport in Spin Chains Simulations of Information Transport in Spin Chains

2007-06-04

arxiv.org/abs/0706.0342v1

Phys. Rev. A 76, 032317 (2007)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.99.250506

Transport of quantum information in linear spin chains has been the subject of much theoretical work. Experimental studies by nuclear spin systems in solid-state by NMR (a natural implementation of such models) is complicated since the dipolar Hamiltonian is not solely comprised of nearest-neighbor XY-Heisenberg couplings. We present here a similarity transformation between the XY-Heisenberg Hamiltonian and the grade raising Hamiltonian, an interaction which is achievable with the collective control provided by radio-frequency pulses in NMR. Not only does this second Hamiltonian allows us to simulate the information transport in a spin chain, but it also provides a means to observe its signature experimentally.

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