Efficient quantum state transfer in spin chains via adiabatic passage

K. Eckert, O. Romero-Isart, A. Sanpera

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42 Citations (Scopus)

Abstract

We propose a method for quantum state transfer in spin chains using an adiabatic passage technique. Modifying even and odd nearest-neighbour couplings in time allows transfer fidelities arbitrarily close to one to be achieved, without the need for precise control of coupling strengths and timing. We study in detail transfer by adiabatic passage in a spin-1 chain governed by a generalized Heisenberg Hamiltonian. We consider optimization of the transfer process applying optimal control techniques. We discuss a realistic experimental implementation using cold atomic gases confined in deep optical lattices. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Original languageEnglish
Article number155
JournalNew Journal of Physics
Volume9
DOIs
Publication statusPublished - 29 May 2007

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