2009/11/30 by C. Di Franco, M. Paternostro, M. S. Kim · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physreva.81.022319
published as Phys. Rev. A 81, 022319 (2010) · 7 pages, 7 figures, RevTeX4
arxiv created 2010/02/23 · arxiv updated 2010/02/26
We propose a strategy for perfect state transfer in spin chains based on the use of an unmodulated coupling Hamiltonian whose coefficients are explicitly time dependent. We show that, if specific and non-demanding conditions are satisfied by the temporal behavior of the coupling strengths, our model allows perfect state transfer. The paradigma put forward by our proposal holds the promises to set an alternative standard to the use of clever encoding and coupling-strength engineering for perfect state transfer.