TY - JOUR
T1 - Enhancement of entanglement transfer in a spin chain by phase-shift control
AU - Maruyama, Koji
AU - Iitaka, Toshiaki
AU - Nori, Franco
PY - 2007
Y1 - 2007
N2 - We study the effect of a phase shift on the amount of transferable two-spin entanglement in a spin chain. We consider a ferromagnetic Heisenberg or XY spin chain, both numerically and analytically, and two mechanisms to generate a phase shift, the Aharonov-Casher effect, and the Dzyaloshinskii-Moriya interaction. In both cases, the maximum attainable entanglement is shown to be significantly enhanced, suggesting its potential usefulness in quantum information processing.
AB - We study the effect of a phase shift on the amount of transferable two-spin entanglement in a spin chain. We consider a ferromagnetic Heisenberg or XY spin chain, both numerically and analytically, and two mechanisms to generate a phase shift, the Aharonov-Casher effect, and the Dzyaloshinskii-Moriya interaction. In both cases, the maximum attainable entanglement is shown to be significantly enhanced, suggesting its potential usefulness in quantum information processing.
UR - http://www.scopus.com/inward/record.url?scp=33846563459&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.75.012325
DO - 10.1103/PhysRevA.75.012325
M3 - 学術論文
AN - SCOPUS:33846563459
SN - 1050-2947
VL - 75
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
M1 - 012325
ER -