18 citations
Showing quant-phShow all
2 papers · 1 filter
quant-ph2010★ 6 cited
All maps equivalent to a given map, completely positive or not
Yong-Cheng Ou, Mark S. Byrd
A dynamical map is a map which takes one density operator to another. Such a map can be written in an operator-sum representation (OSR) using a spectral decomposition. The method o…
quant-ph2008★ 18 cited
Quantum communication through anisotropic Heisenberg XY spin chains
Z. -M. Wang, M. S. Byrd, B. Shao +1
We study quantum communication through an anisotropic Heisenberg XY chain in a transverse magnetic field. We find that for some time and anisotropy parameter , one can trans…